SEBA-405 get synchronizer library unit tests automated;
restore previously disabled tests

Change-Id: Ic3ae85548697ae4feda0bd545b53b665409e2770
diff --git a/containers/chameleon/Dockerfile.chameleon b/containers/chameleon/Dockerfile.chameleon
index 10fd11b..f9e0a87 100644
--- a/containers/chameleon/Dockerfile.chameleon
+++ b/containers/chameleon/Dockerfile.chameleon
@@ -13,7 +13,7 @@
 # limitations under the License.
 
 # xosproject/chameleon
-FROM xosproject/xos-base:2.1.39
+FROM xosproject/xos-base:2.1.40
 
 # xos-base already has protoc and dependencies installed