Use proper branch string for version check

Change-Id: I7e3a4de571b20984c75dc8ac65a7a07558e57cd6
diff --git a/jjb/onos/install-bazel.sh b/jjb/onos/install-bazel.sh
index f28fbba..86c01f4 100644
--- a/jjb/onos/install-bazel.sh
+++ b/jjb/onos/install-bazel.sh
@@ -7,7 +7,7 @@
 then
     BAZEL_VERSION="0.19.2"
 else
-    if [ ${GERRIT_BRANCH} == "master" || ${GERRIT_BRANCH} == "2.2.0" ]; then
+    if [ ${GERRIT_BRANCH} == "master" -o ${GERRIT_BRANCH} == "onos-2.2" ]; then
         BAZEL_VERSION="0.27.0"
     else
         BAZEL_VERSION="0.24.1"