Add toggle for skipping tests

bin/circle-test-post

@@ -4,6 +4,8 @@ set -e
 
 source "$STATE"
 
-cd $SRCDIR/test
-./gce.sh destroy
-test "$CIRCLE_NODE_INDEX" != "0" || (cd $SRCDIR/test; ./gen_coverage_reports.sh)
+if [ -z "$SKIP_TESTS" ] ; then
+    cd $SRCDIR/test
+    ./gce.sh destroy
+    test "$CIRCLE_NODE_INDEX" != "0" || (cd $SRCDIR/test; ./gen_coverage_reports.sh)
+fi