tests: isis_te_topo1 can fail occassionally

tests: isis_te_topo1 can fail occassionally

Upstream ( and locally ) this test fails.  The adj-sid value
being looked for in the testing is a dynamic value that is
assigned based upon how the network comes up.  The reality
is that there is no enforced order of what the adj-sid
can be.  As such this test looking for this value makes
no sense.  Let's remove that from the test.

Additionally bring the isis hello-interval to 1 down
from 3 to make things converge faster.

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