Capture timestamp whenever cleanup is triggered in tests (#2054)

Signed-off-by: Sanket Sudake <sanketsudake@gmail.com>

test/tests/test_specs/test_spec_merge/test_spec_merge.sh

@@ -9,7 +9,7 @@ env_n=nodend
 fn_nd=nodehellond
 
 cleanup() {
-    echo "Cleaning up..."
+    log "Cleaning up..."
     fission spec destroy || true
     popd
 }
@@ -32,11 +32,11 @@ fission fn test --name $fn_nd
 hnd=$(kubectl -n $FUNCTION_NAMESPACE get deployment -l=functionName=$fn_nd -ojsonpath='{.items[0].spec.template.spec.hostname}')
 
 if [[ "${hnd}" == "foo-bar" ]]; then
-    echo "Hostname matches for newdeployment function, podspec test 1/2 passsed"
+    log "Hostname matches for newdeployment function, podspec test 1/2 passsed"
 fi
 
 hnp=$(kubectl -n $FUNCTION_NAMESPACE get deployment -l=environmentName=$env_p -ojsonpath='{.items[0].spec.template.spec.hostname}')
 
 if [[ "${hnp}" == "foo-bar" ]]; then
-    echo "Hostname matches for poolmgr function, podspec test 2/2 passsed"
+    log "Hostname matches for poolmgr function, podspec test 2/2 passsed"
 fi