addons: vrf: bring up vrf master when ALL or CLASS

addons: vrf: bring up vrf master when ALL or CLASS

Ticket: CM-12084
Reviewed By: julien, nikhil
Testing Done: Tested ifreload/ifup/ifdown --allow=<class>

vrf slave brings up the master if master is not up yet.
Today this is done only when ALL (auto) option is set
just as an optimization. because you dont want to bring
up the master in cases where user just wants to
bring up the vrf slave. eg ifup -v eth0.

This does not work so well, when user uses
--allow classes to bring up vrf master and slaves
together (eg mgmt vrf).

This patch removes the ALL check when bringing
up master and replaces it with an ALL or
CLASS check. ie make sure vrf master belongs to the
same class as you when CLASS is specified.

Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>