JWT failed to validate on auth-oidc endpoint used by openstack cli
with "could not find key with kid: XX" error. To fix this we need
to use jwks provided in "jwks_uri" by OIDC metadata endpoint.
Missing "ServerName" directive from vhost config causes redirection
to fail in some cases when external tls is enabled.
- added "keystone_federation_oidc_jwks_uri" variable
- added "OIDCOAuthVerifyJwksUri" to keystone vhost config
- added "ServerName" to keystone vhost config
- jinja templating additional whitespace trimmed to
correct end result indentation and empty newlines
Closes-bug: 1990375
Change-Id: I4f5c1bd8be8e23cf6299ca4bdfd79e9d98c9a9eb
9892976119