Keytabs are slightly longer than what is being tested; upto 100 bytes
or so. This means the encoded data breaks over lines, which means you
need to be more careful about quoting.
Update the testing to a longer keytab (100 bytes of random data) and
fix up the quoting. Also enable no_logging to avoid putting key
material into the logs.
Change-Id: I73c391a2ebd2c962dc9a422f9d44265160210852
aa357fc19f