pimd: make pim interface hold interval range 1-630

pimd: make pim interface hold interval range 1-630

Making the interface holdtime range to 3.5 times the hello-time

As per 7761, Section 4.11:
The Holdtime in a Hello message should be set to
   (3.5 * Hello_Period), giving a default value of 105 seconds.

Therefore providing the user also to configure max upto 3.5 times
the hello timer interval.

Signed-off-by: Mobashshera Rasool <mrasool@vmware.com>
(cherry picked from commit 142774530ade49f63997bd52c434457fe8979bdf)