Fix run_tests.sh usage of tools/colorizer.py.

* run_tests.sh: tools/colorizer.py expects subunit v1 and not v2.
Convert the subunit stream to v1 if subunit-2to1 is present (this
indicates v2 of subunit is being used) before passing the output on to
tools/colorizer.py.

Fixes bug #1168516

Change-Id: I6be917181fa8d18764db89e741190964546d0632

run_tests.sh

@@ -137,7 +137,14 @@ function run_tests {
   testrargs=`echo "$testrargs" | sed -e's/^\s*\(.*\)\s*$/\1/'`
   TESTRTESTS="$TESTRTESTS --testr-args='--subunit $testropts $testrargs'"
   echo "Running \`${wrapper} $TESTRTESTS\`"
-  bash -c "${wrapper} $TESTRTESTS | ${wrapper} tools/colorizer.py"
+  if ${wrapper} which subunit-2to1 2>&1 > /dev/null
+  then
+    # subunit-2to1 is present, testr subunit stream should be in version 2
+    # format. Convert to version one before colorizing.
+    bash -c "${wrapper} $TESTRTESTS | ${wrapper} subunit-2to1 | ${wrapper} tools/colorizer.py"
+  else
+    bash -c "${wrapper} $TESTRTESTS | ${wrapper} tools/colorizer.py"
+  fi
   RESULT=$?
   set -e