Adds Cypress E2E tests and GitHub Action Cypress workflow (from a fork repo)

[ftianli-amzn]

Issue #, if available:

Description of changes:

1. Adds Cypress E2E tests, which contains the following test cases:

• Monitor:
  • Create a monitor
  • Update a monitor by changing the name
  • Delete a monitor
  • Search a monitor
  • Add a trigger to the monitor
  • Add an action to the trigger
• Destination:
  • Create a destination
  • Update a destination by changing the name
  • Delete a destination
  • Search a destination
• Alert:
  • Alert can be in Active state
  • Alert can be in Acknowledged state
  • Alert can be in Completed state
  • Alert can be in Error state
  • Alert can be in Deleted state

2. Adds GitHub Action workflow to run E2E tests on pull requests

References of the code changes:

1. Adds cypress e2e tests and github action cypress workflow index-management-kibana-plugin#80
2. https://github.com/opendistro-for-elasticsearch/security-kibana-plugin/pull/172

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[ftianli-amzn]

Cypress tests running result:

# ftianli @ MacBook-Pro in ~/Github/kibana-oss/plugins/alerting-kibana-plugin on git:cypress_od1.8 o [20:28:26] 
$ yarn run cypress run                   
yarn run v1.22.4
$ /Users/ftianli/Github/kibana-oss/plugins/alerting-kibana-plugin/node_modules/.bin/cypress run

====================================================================================================

  (Run Starting)

  ┌────────────────────────────────────────────────────────────────────────────────────────────────┐
  │ Cypress:    4.8.0                                                                              │
  │ Browser:    Electron 80 (headless)                                                             │
  │ Specs:      3 found (alert_spec.js, destination_spec.js, monitor_spec.js)                      │
  └────────────────────────────────────────────────────────────────────────────────────────────────┘



====================================================================================================

  (Run Finished)


       Spec                                              Tests  Passing  Failing  Pending  Skipped  
  ┌────────────────────────────────────────────────────────────────────────────────────────────────┐
  │ ✔  alert_spec.js                            02:36        5        5        -        -        - │
  ├────────────────────────────────────────────────────────────────────────────────────────────────┤
  │ ✔  destination_spec.js                      00:28        4        4        -        -        - │
  ├────────────────────────────────────────────────────────────────────────────────────────────────┤
  │ ✔  monitor_spec.js                          00:45        6        6        -        -        - │
  └────────────────────────────────────────────────────────────────────────────────────────────────┘
    ✔  All specs passed!                        03:49       15       15        -        -        -  

✨  Done in 257.48s.

[ftianli-amzn]

The workflow failed at Checkout Kibana might be because:

Secrets aren't available to fork PRs.

(actions/checkout#221)

[dbbaughe]

@ftianli-amzn you should be able to create the PR from a temporary branch in the repo itself so it can use the secrets in the repo. Will not work from a fork as of now until the Kibana repo goes public.

[ftianli-amzn]

@ftianli-amzn you should be able to create the PR from a temporary branch in the repo itself so it can use the secrets in the repo. Will not work from a fork as of now until the Kibana repo goes public.

Thank you for your advice and confirmation! I will test the workflow in this way.