Fix op policy

Fix op policy so that when UI sends empty string the targetResourceId is
set to null

Issue-ID: CLAMP-153
Change-Id: I0b6680106548111d59f2170f8f7c42414e0644c8
Signed-off-by: Determe, Sebastien (sd378r) <sd378r@intl.att.com>
diff --git a/src/test/resources/example/operational-policy/yaml-policy-chain-1.yaml b/src/test/resources/example/operational-policy/yaml-policy-chain-1.yaml
index fec0e1e..3d0252a 100644
--- a/src/test/resources/example/operational-policy/yaml-policy-chain-1.yaml
+++ b/src/test/resources/example/operational-policy/yaml-policy-chain-1.yaml
@@ -31,7 +31,7 @@
   retry: 3
   success: <generatedId>
   target:
-    resourceID: resource-id
+    resourceID: null
     type: VM
   timeout: 180
 - actor: APPC