Simpilfy reporttool to just report
Simpilfy reporttool to just report

Rename the reporttool command to simply report and also rename the
'full' subcommand to release as it generates a release report.

Improve documentation on what the command does.

Change-Id: I85ac29c4db55346ac3c37b38ad90bb4668b64137
Signed-off-by: Thanh Ha <09ea4d3a79c8bee41a16519f6a431f6bc0fd8d6f@linuxfoundation.org>

opendaylight/spectrometer,opendaylight/spectrometer,opendaylight/spectrometer,opendaylight/spectrometer