Enable concurrency for oscore deploy jobs

Enable concurrency for test-salt-formula-refspec-template parent
job.

Apply throttle category for test-openstack-component-formula jobs.

Our CI is bottleneck for salt-formula changes at the moment,
since we do not allow concurrent builds.
This patch allows to configure job concurrency with
Throttle Concurrent Builds plugin.

Depends-On: Ie5ec841af6a1d73959e760471d7ed00ac7c3f882

Change-Id: Id1e141220e1d87bf69e5cdd12a18fe437450e1ae
diff --git a/jenkins/client/job/oscore/tests.yml b/jenkins/client/job/oscore/tests.yml
index bab8804..06060bd 100644
--- a/jenkins/client/job/oscore/tests.yml
+++ b/jenkins/client/job/oscore/tests.yml
@@ -12,6 +12,12 @@
                 keep_num: 30
             type: workflow-scm
             concurrent: true
+            plugin_properties:
+              throttleconcurrents:
+                enabled: true
+                throttle_option: category
+                categories:
+                  - oscore-ci-builds
             scm:
               type: git
               url: "${_param:jenkins_gerrit_url}/openstack-ci/openstack-pipelines.git"
@@ -638,7 +644,7 @@
               artifact:
                 keep_num: 30
             type: workflow-scm
-            concurrent: false
+            concurrent: true
             scm:
               type: git
               url: "${_param:jenkins_gerrit_url}/openstack-ci/openstack-pipelines.git"