pimd: Don't refersh the oif_creation timer if S,G already present

pimd: Don't refersh the oif_creation timer if S,G already present

Issue: Shut the RP interface in the router RP. LHR will get to know
RP becomes not-reachable, so it send a prune towards the RP. On
receiving the prune, RP clear the (*, G) entry, but (S, G) should
not get removed if present.
Now no-shut the RP interface in the router RP. LHR will send a (*, G)
join towards the RP. On receiving join FRR create the (*, G) entry.
Along with this, it also add the interface(join received) in the OIL
of (S, G) and also refresh the (S, G) timer.

Fix: Dont refresh the timer for S, G or (*, G), if the flag for the
channel OIL is PIM_OIF_FLAG_PROTO_ANY.

Signed-off-by: Sarita Patra <saritap@vmware.com>