[VOL-2356]core log_level command line argument should take log level names not int value

- StringToInt method returns an error message when invalid loglevel is passed.

Change-Id: If567c0a6800da91a77e8be205de8c01b4f22271b
diff --git a/VERSION b/VERSION
index a909317..d5401ed 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-3.0.10
+3.0.11-dev