Fix some startup issues now that we use cluster size

- Change max cluster size to size of largest cluster
- Cleanup some reading of params
- Catch when ONOS isn't fully started

Change-Id: I5b2ca791046bd4061d31355276958ead39f8b65c
(cherry picked from commit ace1f317e19fd50924e78e53b566d69db23f5683)
diff --git a/TestON/drivers/common/cli/onosclidriver.py b/TestON/drivers/common/cli/onosclidriver.py
index 158c706..4112977 100755
--- a/TestON/drivers/common/cli/onosclidriver.py
+++ b/TestON/drivers/common/cli/onosclidriver.py
@@ -800,7 +800,8 @@
                 cmdStr += " -j"
             output = self.sendline( cmdStr )
             assert output is not None, "Error in sendline"
-            assert "Command not found:" not in output, output
+            # "Command not found" or "Service org.onosproject.security.AuditService not found"
+            assert "not found" not in output, output
             return output
         except AssertionError:
             main.log.exception( "" )