Add nightly job for oss devops-portal tests

us: https://mirantis.jira.com/browse/PROD-13240

Change-Id: I2cc8c1be8b0b3002d5468def68d9c1888aa7d168
diff --git a/jenkins/client/job/oss/init.yml b/jenkins/client/job/oss/init.yml
index 0e23f01..f8b5bdc 100644
--- a/jenkins/client/job/oss/init.yml
+++ b/jenkins/client/job/oss/init.yml
@@ -1,3 +1,4 @@
 classes:
   - system.jenkins.client.job.oss.test_devops_portal
+  - system.jenkins.client.job.oss.test_devops_portal_nightly
   - system.jenkins.client.job.oss.test_security_monkey_openstack