Use openflowjava-supplied MAC address utilities

The implementations provided here are trivial and do not perform as well
as they could. openflowjava has optimized versions of these, so use
those.

Change-Id: I895b9e2d0268b8497590438195c644c97967abfe
Signed-off-by: Robert Varga <robert.varga@pantheon.sk>
Bug-1152:Converting PopVlan to StripVlan for OF1.0

Change-Id: If2d3e8f1ffdc6bbd089d5d073fab55d88fac9900
Signed-off-by: Kamal Rameshan <kramesha@cisco.com>

Bug-1152:Converting StripVlan to PopVlan for OFP-SAL traffic

Change-Id: If2d3e8f1ffdc6bbd089d5d073fab55d88fac9900
Signed-off-by: Kamal Rameshan <kramesha@cisco.com>
Merge "Bug-1152:Converting PopVlan to StripVlan for OF1.0"
Merge "Use openflowjava-supplied MAC address utilities"