Bump up the time for a regression test

Author: cacraigucar

cime_config/testdefs/testlist_cam.xml

@@ -135,7 +135,7 @@
     </machines>
     <options>
       <option name="comment" >cam6; branch, hybrid starts</option>
-      <option name="wallclock">00:20:00</option>
+      <option name="wallclock">00:30:00</option>
     </options>
   </test>
   <test compset="FHIST" grid="f09_f09_mg17" name="ERP_Ln9" testmods="cam/outfrq9s">