Plugin cf-object-storage not found on disk or in any registered repo

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OS: Mac OS X 10.12.2
cf version: 6.30.0

When I do cf install-plugin cf-object-storage, I obtain:

Searching CF-Community for plugin cf-object-storage...
Plugin cf-object-storage not found on disk or in any registered repo.
Use 'cf repo-plugins' to list plugins available in the repos.
FAILED

When I run cf repo-plugins, I have:

Repository: CF-Community
name                         version   description
AppsMetrics Plugin           1.0.0     This plugin allows you to hit a metrics endpoint across all your app instances
Firehose Plugin              0.13.0    This plugin allows you to connect to the firehose
Create-Service-Push          1.0.0     A CF CLI plugin to create services specified from a services manifest yml file and then push an application to Cloud Foundry
network-policy               1.6.1     Allow the user to manage application network policies
cflocal                      0.18.0    Stage and launch CF apps, push and pull droplets, and connect to real CF services -- in Docker
Service Instance Logging     1.0.0     For service brokers that implement a logging endpoint, this plugin will allow recent dump and streaming of logs from that endpoint.
Spring Cloud Services        1.0.0     Manage Pivotal Spring Cloud Services service instances and service registries. Encrypt a string using a configuration service.
Targets                      1.2.0     Easily manage multiple CF targets
open                         1.2.1     Open App URLs + Service dashboards in browser
fastpush                     1.1.0     Fast, non-persistent, smart and incrementally updating of your application
started-apps                 0.1.0     Easily view which apps are started
service-use                  1.0.1     Report on service usage in the platform based on your sign-in privileges
java-plugin                  1.1.0     Obtain a heap-dump or thread-dump from a running, Diego-enabled, SSH-enabled Java application.
top                          0.8.8     An interactive interface that shows top statistics similar in concept as the UNIX top command.
                                       Fixed - AppDetailView is now refreshed in background while the App Info view is displayed.
                                       Fixed - When viewing appListDetail view the header toggle (shift-h) would also collapse Http and Crash data boxes. This has been fixed to only collapse verbose header output.
                                       Fixed - Use LogMessage timestamp instead of Event timestamp for tracking last container messages.
                                       Fixed - Highlight scrolling and display list issue fixed when the list of data becomes smaller then the current scrolling offset.
                                       Fixed - Issue with terminal window with zero dimention causing panic because helpTextTipsView layout error:invalid dimensions.
                                       Enhancement - Save column filter for each view type allowing easier usage when returning back to a view that has customized column filters.
                                       Enhancement - Save column sort order for each view type allowing easier usage when returning back to a view that has customized column sorts.
                                       Enhancement - Monitor staging events to reload metadata when staging is complete.
                                       Enhancement - Added Clipboard menu option to appDetailView.

cf-aklogin                   1.2.9     CF Login tool to switch between CF environments with a single command
Diego-Enabler                1.2.4     Enable/Disable Diego support for an app (CLI v6.13.0+)
mysql-plugin                 1.4.0     Runs mysql and mysqldump clients against your CF database services. Use it to inspect, dump and restore your DB.
deploy                       0.3.0     Create/update initial Cloud Foundry state (orgs, spaces, users, services, apps, and more) via a yml file
bg-restage                   1.0.0     Perform a zero-downtime restage of an application over the top of an old one (highly inspired by autopilot)
copy                         0.9.4     Copies applications and services in current space to another space or Cloud Foundry target.
whoami-plugin                0.2.0     This plugin shows you the name of the currently logged in user
sync                         1.2.0     Synchronize a local folder to a remote folder inside a Cloud Foundry app to make changes on the fly
cf-icd-plugin                0.0.11    Helper plugin for traceability function in IBM Cloud Devops
blue-green-deploy            1.2.0     Zero downtime deploys with smoke test support
buildpack-usage              1.0.4     Show which apps are using an installed buildpack
do-all                       1.1.2     Run the same command on all the apps in a space, org, or globally
get-events                   0.6.0     Get microservice events
route-lookup                 1.1.0     Find the application(s) associated with a given hostname
doctor                       1.0.3     doctor scans your deployed applications, routes and services for anomalies and reports any issues found. (CLI v6.7.0+)
Usage Report                 1.4.1     Report on memory usage and application instances for orgs and spaces
docker-usage                 1.0.3     Show which apps are using docker images
cf-download                  1.2.0     Plugin for downloading your application contents after staging.
update-cli                   0.1.1     Update cloudfoundry/cli to the latest version
cf-predix-analytics-plugin   0.0.1     Provides CLI based access to Predix Analytics Catalog features
Copy Env                     1.1.1     Expose remote VCAP_SERVICES on the client environment
antifreeze                   0.3.0     Detect if an app has unexpected ENV vars or services bound which are missing from the manifest
Scaleover                    1.0.4     Roll traffic from one app to another by scaling over time
cf-willitconnect             1.1.0     Can CF connect to a thing?
Download Droplet             1.0.1     Download droplets to your local machine
manifest-generator           1.0.0     Help you to generate a manifest from 0 (CLI v6.7.0+)
kibana-me-logs               0.4.3     Launches the Kibana UI (from kibana-me-logs) for an application.
Cloud Deployment Plugin      1.0.1     This plugin allows you to manage application deployment details and manifests in a github repo (like spring cloud config server for deployments)
Buildpack Management         1.0.0     Provides a declarative way to configure system buildpacks in a Cloud Foundry installation
CLI-Recorder                 1.0.2     Records and playbacks CLI commands.
Statistics                   1.0.0     Display live metrics/statistics about an app
wildcard_plugin              1.0.0     Allows user to search and delete apps using wildcard(*)
CF App Stack Changer         1.1.0     Allows admins to list and update applications with outdated lucid64 stacks.
Buildpack Usage              1.0.0     View all buildpacks used in the current CLI target context.
Test User                    0.0.1     Create a user and assign all possible permissions, organisation and space are created if they do not already exist as well. If no organisation or space name are specified then the default value of 'development' is used
Brooklyn                     0.1.1     Interact with Service Broker for Apache Brooklyn
autopilot                    0.0.1     zero downtime deploy plugin for cf applications
Live Stats                   1.0.0     Monitor CPU and Memory usage on an app via the browser.
Console                      1.0.0     Start a tmate session on an application container