fix(jobspec): use 100b for tput and pps tests

fix(jobspec): use 100b for tput and pps tests

For TCP tests, 1518b is closer to what the real traffic would be,
but as usual we want smaller sizes to stress VPP before filling line.

CPS tests remain at 64b.

Fixes: 1daa6fdc0bae284dee1b61f34534e59b60b7526a

Change-Id: Id16056b63006bb569a600fa1d9e318fd2853a5c8
Signed-off-by: Vratko Polak <vrpolak@cisco.com>