CP-3442: Allow disabling of VIFs without a license check.
CP-3442: Allow disabling of VIFs without a license check.

Also remove some of the checks for a vswitch controller - we only really
need to check for this when locking or disabling a VIF, not when adding
or removing IP addresses.

Signed-off-by: John Else <37b74501daa612e48fea94f9846ed4ddeb6a8f07@citrix.com>

johnelse/xcp-rrdd,koushikcgit/xcp-rrdd,simonjbeaumont/xcp-rrdd,koushikcgit/xcp-rrdd,simonjbeaumont/xcp-rrdd,djs55/xcp-rrdd,djs55/xcp-rrdd,johnelse/xcp-rrdd,robhoes/squeezed,sharady/xcp-networkd,koushikcgit/xcp-networkd,koushikcgit/xcp-networkd,djs55/squeezed,sharady/xcp-networkd,djs55/xcp-networkd,djs55/xcp-networkd,koushikcgit/xcp-rrdd