Fixes Hyper-V agent issue on Hyper-V 2008 R2

The vmutils.HyperVUtils class used on versions of Hyper-V prior of 2012
is missing the "remove_all_security_rules" method.

Change-Id: Ib14e643c400b230c912589f9480acf59d6e7b147
Closes-Bug: #1360817
Fix a bug in Mellanox plugin RPC caused by secgroup RPC refactoring

SecurityGroupsRpcCallback RPC refactoring patch (commit 2781fce238)
moves get_port_from_device method from plugin RPC callback class to
plugin layer, but Mellanox plugin RPC callback was forgot to update
and as a result RPC calls from agents to Mellanox plugin fails.

Change-Id: I1aa82ac00c16a53a59a93087f0ca4ef281ee3f2b
Related-Bug: #1359416
Merge "Fixes Hyper-V agent issue on Hyper-V 2008 R2"
Merge "Fix a bug in Mellanox plugin RPC caused by secgroup RPC refactoring"