- This change extends the ip_command interface set function
to accept a master as a parent device for a given interface.
- This change extends the impl_pyroute2 add function to
support creating linux bridges.
- This change replaces calls to brctl with calls to the ip_command api.
- This change removes the use of tee to disable ipv6 in the ovs plugin.
Change-Id: I8308e8840e20b0a72d00880c1a7996b4c73f6a83
Partial-Bug: #1801919