[tool] Add bulk_review.sh to process

This patch adds bulk_review.sh script usage to process, as that can be
used for some of the tasks, for example for mass stable branch cutting.

This patch also refactors the script with some minor change to make it
more convenient to use.

Change-Id: I192d978b09e6478f57251b0ea2371748da8f646c

doc/source/reference/process.rst

@@ -1089,6 +1089,10 @@ R-4 week
 
         Please use ``$series-stable-branches`` as gerrit topic.
 
+     After the above command created the branch cut changes,
+     ``tools/bulk_review.sh`` script can be used to propose them in separate
+     patches, grouped by teams.
+
    - That patch will be used as a base
      to communicate with the team: if a team wants to wait for a specific patch
      to make it to the library, someone from the team can -1 the patch to have

tools/bulk_review.sh

@@ -34,6 +34,17 @@ function usage {
     echo "PTLs and liaisons will be CC'd on the review"
 }
 
+
+# Activate venv if not yet activated as we need it for some commands
+TOOLSDIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+BASEDIR=$(dirname $TOOLSDIR)
+if [[ -z "$VIRTUAL_ENV" ]]; then
+    if [[ ! -d $BASEDIR/.tox/venv ]]; then
+        (cd $BASEDIR && tox -e venv --notest)
+    fi
+    source $BASEDIR/.tox/venv/bin/activate
+fi
+
 # NOTE: It might be worth switching getopt but I don't know if that is
 # available and the same on MacOS
 while getopts "t:s:b:" arg ; do
@@ -106,8 +117,12 @@ for team in "${!files_by_team_release[@]}" ; do
     git checkout $branch_name
     git show --stat
     echo
-    echo 'Push? (Ctrl-C to cancel)'
-    read
-    git review -y -t $topic
+    read -p "> Push? (press N to skip) " SKIP
+    if [ "${SKIP,,}" == "n" ]; then
+        echo "Skipping."
+    else
+        git review -y -t $topic
+    fi
+
 done
 git checkout master