Add testing job for pushkin repository

Related US: https://mirantis.jira.com/browse/PROD-14082

Change-Id: Ie08023c0ab303b60165de0531ef645c7ce811bb8
diff --git a/jenkins/client/job/oss/init.yml b/jenkins/client/job/oss/init.yml
index f8b5bdc..9478ffd 100644
--- a/jenkins/client/job/oss/init.yml
+++ b/jenkins/client/job/oss/init.yml
@@ -1,4 +1,5 @@
 classes:
   - system.jenkins.client.job.oss.test_devops_portal
   - system.jenkins.client.job.oss.test_devops_portal_nightly
+  - system.jenkins.client.job.oss.test_pushkin_codebase
   - system.jenkins.client.job.oss.test_security_monkey_openstack