Merge pull request #4533 from edx/estute/TE-2561

install ws-cleanup and throttle-concurrent plugins for retirement jobs

playbooks/roles/jenkins_build/defaults/main.yml

@@ -147,7 +147,7 @@ build_jenkins_plugins_list:
     version: '1.5'
     group: 'org.jenkins-ci.plugins'
   - name: 'matrix-project'
-    version: '1.7.1'
+    version: '1.8'
     group: 'org.jenkins-ci.plugins'
   - name: 'maven-plugin'
     version: '3.1'
@@ -209,6 +209,9 @@ build_jenkins_plugins_list:
   - name: 'thinBackup'
     version: '1.7.4'
     group: 'org.jvnet.hudson.plugins'
+  - name: 'throttle-concurrents'
+    version: '2.0.1'
+    group: 'org.jenkins-ci.plugins'
   - name: 'timestamper'
     version: '1.8.9'
     group: 'org.jenkins-ci.plugins'
@@ -233,6 +236,9 @@ build_jenkins_plugins_list:
   - name: 'workflow-support'
     version: '2.18'
     group: 'org.jenkins-ci.plugins.workflow'
+  - name: 'ws-cleanup'
+    version: '0.34'
+    group: 'org.jenkins-ci.plugins'
   - name: 'xunit'
     version: '1.93'
     group: 'org.jenkins-ci.plugins'