Repository discovery for container images fails with 'Discovery failed. Failed to open TCP connection to registry.access.redhat.com' error.

Issue

• Repository discovery for container images 'https://registry.access.redhat.com' fails with below error:

  Discovery failed. Error: Failed to open TCP connection to registry.access.redhat.com:443
  { No route to host - connect(2) for "registry.access.redhat.com" port 443}