Related functional tests are converted into JSON format.
Otherwise, it is not easy to check results.
Partial-Bug: #1687955
Partially implement blueprint osc-formattable-columns
Change-Id: Ib82e15738544975fede0c54cc5eaf239f4c67277
this will better isolate the unit tests from the functional tests.
unfortunately, the "integration" tests had to be lumped into the
"unit" tests since we need the separation in testr.conf
Change-Id: Ifd12198c1f90e4e3c951c73bfa1884ab300d8ded