Bug 1299 - OF10 plugin sending Stats Request type 13
Once node connect to the plugin, it sends port desciption statistics request to the node.
This statistic request is only defined for openflow 1.3+ switches. Added the condition
to avoid sending this request to openflow 1.0 switch

Change-Id: I10a81a7e83efc0e75eb4581ea24b226626625a26
Signed-off-by: Anilkumar Vishnoi <avishnoi@in.ibm.com>