Implement missing onosdriver function used by STS

This was found after logging exceptions in the testcases. The
implementation will need to be improved if we use STS to fuzz test
ONOS. This is currently being called when we create a
"TestONTopology" object through STS
diff --git a/TestON/drivers/common/cli/onosdriver.py b/TestON/drivers/common/cli/onosdriver.py
index c2b3693..328ac0e 100644
--- a/TestON/drivers/common/cli/onosdriver.py
+++ b/TestON/drivers/common/cli/onosdriver.py
@@ -1590,3 +1590,49 @@
             main.cleanup()
             main.exit()
 
+    def detailed_status(self, log_filename):
+        '''
+        This method is used by STS to check the status of the controller
+        Reports RUNNING, STARTING, STOPPED, FROZEN, ERROR (and reason)
+        '''
+        import re
+        try:
+            self.handle.sendline( "" )
+            self.handle.expect( "\$" )
+            self.handle.sendline( "cd " + self.home )
+            self.handle.expect( "\$" )
+            self.handle.sendline( "service onos status" )
+            self.handle.expect( "\$" )
+            response = self.handle.before
+            if re.search( "onos start/running", response ):
+                # onos start/running, process 10457
+                return 'RUNNING'
+            # FIXME: Implement this case
+            # elif re.search( pattern, response ):
+            #      return 'STARTING'
+            elif re.search( "onos stop/", response ):
+                # onos stop/waiting
+                # FIXME handle this differently?:  onos stop/pre-stop
+                return 'STOPPED'
+            # FIXME: Implement this case
+            # elif re.search( pattern, response ):
+            #      return 'FROZEN'
+            else:
+                main.log.warn( self.name +
+                               " WARNING: status recieved unknown response" )
+                main.log.warn( response )
+                return 'ERROR', "Unknown response: %s" % response
+        except pexpect.TIMEOUT:
+            main.log.exception( self.name + ": Timeout exception in "
+                                "setIpTables function" )
+            return 'ERROR', "Pexpect Timeout"
+        except pexpect.EOF:
+            main.log.error( self.name + ": EOF exception found" )
+            main.log.error( self.name + ":    " + self.handle.before )
+            main.cleanup()
+            main.exit()
+        except:
+            main.log.exception( "Unknown error:")
+            main.cleanup()
+            main.exit()
+