updated jenkins slave ansible package

Author: Bryan Oakley-Wiggins

jobs/jenkins-slave/spec

@@ -1,11 +1,12 @@
 ---
 name: jenkins-slave
 
-packages: 
+packages:
 - oraclejdk
 - swarm-client
 - apache-maven
 - git-client
+- ansible
 
 consumes:
 - name: jenkins_master
@@ -37,4 +38,4 @@ properties:
   jenkins.slave.master_password:
     description: "Password of the user to connect to the master server"
   jenkins.slave.mode:
-    description: "The mode to run the slave"
+    description: "The mode to run the slave"