tests: ospf_suppress_fa sleeps, convert to run_and_expect

tests: ospf_suppress_fa sleeps, convert to run_and_expect

The test_ospf_suppres_fa.py script is using straight
up sleeps before testing that the next step worked properly.
On a unloaded test system this will work 100% of the time
on a loaded test system this will have random failures.
Convert the test to use run_and_expect and give each
section of the test 30 seconds to get to the next state
appropriately instead of 10.

Signed-off-by: Donald Sharp <sharpd@nvidia.com>