Add whitelist and blacklist file options to tempest run

This commit uses the regex_builder logic from os-testr to construct a
regex given a whitelist and/or a blacklist file. Where all matches from
the blacklist file will be excluded and all matches from the whitelist file
will be included.

Partially-Implements bp tempest-run-cmd

Change-Id: I642fac16c6da4a5b6c5eb2d6d3145d18ab1823ce
2 files changed