Auth client-credentials issues

[shanedell]

Multiple issues found:

1. After release 0.9.0, the auth client-credentials command no longer supports --client-id and --client-secret.
   • Issue due to the fact https://github.com/opentdf/otdfctl/blob/main/docs/man/auth/client-credentials.md and https://github.com/opentdf/platform/blob/main/Consuming.md both still reference them

2. --with-client-creds and --with-client-creds-file not stopping the prompt from coming up.

   • When running:

      go run auth client-credentials \
          --host http://localhost:8080 \
          --with-client-creds '{"clientId":"opentdf","clientSecret":"secret"}'

   • The below screenshot is gotten:
   
   • The same thing happens using --with-client-creds-file with that same content in the file
3. After getting past entering the data, if running keycloak in docker I always get this error:

   ERROR    could not authenticate: failed to get platform configuration: Get "http://keycloak:8888/auth/realms/opentdf/.well-known/openid-configuration": dial tcp: lookup keycloak: no such host

   • This is even when setting --host http://localhost:8080.

When testing I tested all releases from that had name otdfctl and only 0.6.0 - 0.9.0 worked properly for me, number 2 wasn't really tested though with these ones but in later releases it was.

[shanedell]

I'd be willing to submit a PR to help with these issues.

However, would 1 be solved by:

1. Updating the docs to reference with --with-client-creds and/or --with-client-creds-file
2. Adding support for --client-id and client-secret back in?