List cycle's releases with process_auto_release

Without knowing which releases have been made within the given
series either we shoots in dark in choising the kind of release
(bugfix, feature, major, etc...) or we need to check manually
what are the existing versions. That's time consuming.

These changes simply display the current versions available in
the given series.

Change-Id: Idb160198d52d3bc6b0fa00095b143b19a1f130eb

tools/process_auto_releases.sh

@@ -113,6 +113,7 @@ function process_repo {
     fi
     cd "openstack/$repo"
     prev_tag=$(get_last_tag)
+    echo "Existing versions for ${series}: ${current_series_tag}"
     if [ -z "$prev_tag" ]; then
         echo "$repo has not yet been released"
     else
@@ -162,8 +163,11 @@ $(git log --oneline --no-merges ${prev_tag}..${end_sha})
     echo
 }
 
+CWD=$(pwd)
 # Process each repo passed in to see if a release should be proposed
 for repo in $repos; do
+    cd ${CWD}
+    current_series_tag=$(get-versions-on-series ${series} ${repo})
     cd $MYTMPDIR
     echo
     process_repo "${repo/openstack\//}"