mgr/orchestrator/tests: don't match exact whitespace in table output

mgr/orchestrator/tests: don't match exact whitespace in table output

It seems that the exact spacing may differ a bit between
python versions. Currently seeing py3 (which cooresponds to py 3.6
on my system) passing these tests and py37 (which is python 3.7
obviously) failing. I think verifying against the exact whitespace
is unnecessary anyhow. As long as it isn't egregious, we don't
really need to worry about exactly what the spacing is.

Signed-off-by: Adam King <adking@redhat.com>