Additional work towards application subsystem drivers

    - appStatus function
    - activateApp function
    - deactivateApp function
    - uninstallApp function
    - refactor PingallExample test to use the new functions

NOTE: PingallExample needs to be cleaned up before merged to master
diff --git a/TestON/tests/PingallExample/PingallExample.params b/TestON/tests/PingallExample/PingallExample.params
index 12bebcd..1e4cfc1 100644
--- a/TestON/tests/PingallExample/PingallExample.params
+++ b/TestON/tests/PingallExample/PingallExample.params
@@ -1,12 +1,12 @@
 <PARAMS>
     <testcases>1,2,3</testcases>
     <ENV>
-        <cellName>kelvin</cellName>
+        <cellName>SingleHA</cellName>
     </ENV>
     <Git>xe</Git>
 
     <CTRL>
-        <ip1>10.128.10.21</ip1>
+        <ip1>10.128.30.11</ip1>
         <port1>6633</port1>
     </CTRL>
 </PARAMS>