Augment listener unit test to force in RMR package

Augment listener unit test to force in RMR package

Some CI environment seeem unable to be coaxed into pre-loading
RMR which the listener unit test needs.  If the RMR dev things
aren't found in /usr/local/*  then the script will pull the
neeed libraries (using the rmr-version.yaml as we expect the
CI jobs to do) from package cloud.  The packages will be unpacked
int /tmp/ut_pkg which does NOT require root.

Issue-ID: RIC-632

Signed-off-by: E. Scott Daniels <daniels@research.att.com>
Change-Id: I02c98f797bf2e66b0cf0cb54565cd4dc03dbb22e