Mac test utility (#986)

A utility for running individual or all tests on a Mac dev machine without changing the test script.

test/tests/test_obj_create_in_diff_ns.sh

@@ -9,10 +9,12 @@ id=""
 ROOT=$(dirname $0)/../..
 
 final_cleanup() {
-    rm -rf testDir1 || true
+    rm -rf testDir1/ || true
     kubectl delete ns "ns1-$id" "ns2-$id" &
 }
 
+trap final_cleanup EXIT
+
 cleanup() {
     [[ -n "${1+x}"  && -n "${2+x}" ]]; fission env delete --name $1 --envns $2 || true
     [[ -n "${3+x}"  && -n "${4+x}" ]]; fission fn delete --name $3 --fns $4 || true