This allows the callers condition to be checked immediately without
the mainloop running. In addition may_block=True allows the mainloop
to poll/sleep rather than immediately return back to the caller. This
handles async IO much better than may_block=False, at least for our
use-case.
Namespace process logs were appearing under 'ip' (and also overwriting
actual 'ip' logs) since they were executed with 'ip netns exec <namespace>'.
Instead special case this and append '-<namespace>' to the log file name.
In addition processes executed prior to any tests were being put under
a folder (name of testhome directory). Now this case is detected and these
logs are put at the top level log directory.
In order to keep all test-runner dev scripts working and to work with
the new runner.py system some file renaming was required.
test-runner was renamed to run-tests
A new test-runner was added which only creates the Runner() class.
