change or to and for known CA types

[runyontr]

Signed-off-by: Thomas Runyon [email protected]

Before the change the logic would fail:

go run main.go serve --ca googleca --gcp_private_ca_parent=projects/runyontr/locations/us-east1/ca/fulcio
2021-07-19T15:44:31.130-0400    INFO    app/serve.go:41 booya
2021-07-19T15:44:31.130-0400    FATAL   app/serve.go:42 unknown CA: googleca
github.com/sigstore/fulcio/cmd/app.glob..func2
        /Users/tom/go/src/github.com/runyontr/platform-one/big-bang/scratch/sigstore/fulcio/cmd/app/serve.go:42
github.com/spf13/cobra.(*Command).execute
        /Users/tom/go/pkg/mod/github.com/spf13/[email protected]/command.go:860
github.com/spf13/cobra.(*Command).ExecuteC
        /Users/tom/go/pkg/mod/github.com/spf13/[email protected]/command.go:974
github.com/spf13/cobra.(*Command).Execute
        /Users/tom/go/pkg/mod/github.com/spf13/[email protected]/command.go:902
github.com/sigstore/fulcio/cmd/app.Execute
        /Users/tom/go/src/github.com/runyontr/platform-one/big-bang/scratch/sigstore/fulcio/cmd/app/root.go:41
main.main
        /Users/tom/go/src/github.com/runyontr/platform-one/big-bang/scratch/sigstore/fulcio/main.go:21
runtime.main
        /usr/local/Cellar/go/1.16/libexec/src/runtime/proc.go:225
exit status 1

And now it starts up as expected:

❯ go run main.go serve --ca googleca --gcp_private_ca_parent=projects/leapfrogai/locations/us-east1/caPools/fulcio
2021-07-19T15:44:57.994-0400    INFO    config/config.go:78     No config at /etc/fulcio-config/config.json, using defaults: {map[https://accounts.google.com:{https://accounts.google.com sigstore email} https://oauth2.sigstore.dev/auth:{https://oauth2.sigstore.dev/auth sigstore email}]}
2021-07-19T15:44:58.374-0400    INFO    restapi/server.go:231   Serving fulcio server at http://127.0.0.1:51090
^C2021-07-19T15:45:05.940-0400  INFO    restapi/server.go:231   Shutting down... 
2021-07-19T15:45:05.940-0400    INFO    restapi/server.go:231   Stopped serving fulcio server at http://127.0.0.1:51090