Merge pull request #2953 from edx/jibsheet/add-rebuild

Adds rebuild to the default plugins

playbooks/roles/jenkins_master/defaults/main.yml

@@ -62,6 +62,7 @@ jenkins_plugins:
     - { name: "postbuild-task", version: "1.8" }
     - { name: "plain-credentials", version: "1.1" }
     - { name: "PrioritySorter", version: "2.9" }
+    - { name: "rebuild", version: "1.25" }
     - { name: "sauce-ondemand", version: "1.61" }
     - { name: "scm-api", version: "0.2" }
     - { name: "script-security", version: "1.12" }