Description of problem:
RHUI Alternate Content Source form have steps to generate SSL Client Certificate and SSL Client Key to configure, but it can be refreshed even if these SSL credentials are not provided and it gets successfully refreshed.

Version-Release number of selected component (if applicable):
Satellite 6.13

How reproducible:
Always

Steps to Reproduce:
1. Install a Satellite 6.13.
2. Create RHUI Alternate Content Source.
3. Create 1 RHUI ACS with SSL Credentials (SSL Client Certificate and SSL Client Key) and 1 RHUI ACS without it, but both can be refreshed successfully.

Actual results:

• For both RHUI ACS with or withour SSL Credentials (SSL Client Certificate and SSL Client Key):
  1) Successfully refreshed.
  2) Dynflow output:
  ~~~
  Output:
  —
  response:
  pulp_href: "/pulp/api/v3/acs/rpm/rpm/475fbd9d-79cb-435e-8014-48a89575b7db/"
  pulp_created: !ruby/object:DateTime 2023-02-07 07:09:00.673583000 Z
  name: RHUI4-https://<capsule-hostname>:9090-8621
  paths:
• content/eus/rhel9/rhui/9.0/x86_64/appstream/os/
• content/dist/rhel8/rhui/8.7/x86_64/baseos/os/
  remote: "/pulp/api/v3/remotes/rpm/rpm/1645df20-9b71-4bfa-a109-964f977c3827/"

~~~

Expected results:

• Should show some error while refreshing when no SSL Credentials (SSL Client Certificate and SSL Client Key) provided.

Additional info: