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