Increase run cycle count before starting unsecure mem window test

With increased run cycles, jenkins failure is resolved

Change-Id: I316004d6846800c6b520f881628aa2678c7b9569
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/52066
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Reviewed-by: Sachin Gupta <sgupta2m@in.ibm.com>

src/test/testcases/testUnsecureMemRegions.py

@@ -5,7 +5,7 @@
 #
 # OpenPOWER sbe Project
 #
-# Contributors Listed Below - COPYRIGHT 2017
+# Contributors Listed Below - COPYRIGHT 2017,2018
 # [+] International Business Machines Corp.
 #
 #
@@ -33,7 +33,7 @@
 # MAIN Test Run Starts Here...
 #-------------------------------------------------
 def main():
-    testUtil.runCycles( 10000000 )
+    testUtil.runCycles( 50000000 )
 
     try:
         # Close the HB dump region