Description of problem:

User tries to add an IDP such as GitHub,Google,OpenID,LDAP, GitLab with default name  , It got failed with error related to lower case constrain for Hypershift ROSA.

For example,

CLUSTERS-MGMT-400: Identity provider name 'GitHub' is not valid for Hosted Control Planes. The name must be a lowercase RFC 1123 subdomain.
Operation ID: 9d218005-4cb5-4792-8abc-f8cfc4a06c0e

We need to change the default names of above IDPs to lower case at least for Hypershift clusters.

NOTE: This has been corrected for HTPasswd already.

How reproducible:

 Always

Steps to Reproduce:

1. Install Hypershift ROSA via CLI.
2. Launch OCM UI > Click on the cluster.
3. Go to the access control tab > Add GitHub.
4. Fill all the required values and click on the "Add" button.
5.  View the behavior.
   **

Actual results:
Users are unable to add GitHub for the hypershift ROSA cluster with default name.
It throws the error message

CLUSTERS-MGMT-400: Identity provider name 'GitHub' is not valid for Hosted Control Planes. The name must be a lowercase RFC 1123 subdomain.
Operation ID: 9d218005-4cb5-4792-8abc-f8cfc4a06c0e

Sample applicable for  Google,OpenID,LDAP, GitLab IDPs

Expected results:

Change the default name of IDPs to lowercase to align the hypershift ROSA standards.