add oslo_limit config

This change add supprot for configuring the [oslo_limit] section.
oslo.limit is used by the optional unifed limits quota driver.

This change relys on the automic endpoint discovery intoduced in
oslo.limit 2.6.0

Related: OSPRH-9518

templates/nova.conf

@@ -326,6 +326,16 @@ project_name = service
 username = {{ .nova_keystone_user }}
 password = {{ .nova_keystone_password }}
 
+[oslo_limit]
+system_scope = all
+endpoint_interface = internal
+endpoint_service_type = compute
+auth_url = {{ .keystone_internal_url }}
+auth_type = password
+user_domain_name = {{ .default_user_domain}}
+username = {{ .nova_keystone_user }}
+password = {{ .nova_keystone_password }}
+
 {{ if (index . "compute_driver") }}
 {{if eq .compute_driver "ironic.IronicDriver"}}
 [ironic]

test/functional/novaapi_controller_test.go

@@ -227,6 +227,14 @@ var _ = Describe("NovaAPI controller", func() {
 				Expect(configData).Should(ContainSubstring("enforce_new_defaults=true"))
 				Expect(configData).Should(ContainSubstring("enforce_scope=true"))
 				Expect(configData).Should(ContainSubstring("policy_file=/etc/nova/policy.yaml"))
+				// need for inital quota check when using unifed limits
+				// im using a multi line sting literal so it must be dedented to avoid including
+				// the tabs in the assert
+				Expect(configData).Should(
+					ContainSubstring(`[oslo_limit]
+system_scope = all
+endpoint_interface = internal
+endpoint_service_type = compute`))
 				// test config override
 				Expect(configDataMap.Data).Should(HaveKey("02-nova-override.conf"))
 				extraData := string(configDataMap.Data["02-nova-override.conf"])