Set service_type in [keystone_authtoken] for access rule validation

Without service_type configured, keystonemiddleware cannot validate
application credentials with custom access rules, causing HTTP 401
for end users.

Closes: OSPRH-22365

Signed-off-by: Veronika Fisarova <vfisarov@redhat.com>

Author: Deydra71

templates/00-default.conf

@@ -62,6 +62,7 @@ auth_type = password
 {{ end }}
 auth_url = {{ .KeystoneAuthURL }}
 interface = internal
+service_type = infra-optim
 region_name = {{ .Region }}
 {{ if .CaFilePath }}
 cafile = {{ .CaFilePath }}