Refactoring and enabling AclWebResourceTest

JIRA ID : ONOS-7961
1. Removed @Ignore and enabled the tests
2. Refactored the code in order to extract json string as seperate files
3. Added additional tests

Change-Id: Ic08128575e7a37a9a7dcdc08a6a8eec0e7e19f68
diff --git a/apps/acl/BUILD b/apps/acl/BUILD
index 58e48ae..57963c7 100644
--- a/apps/acl/BUILD
+++ b/apps/acl/BUILD
@@ -6,6 +6,8 @@
 
 TEST_DEPS = TEST_REST + [
     "@jersey_server//jar",
+    "@minimal_json//jar",
+    "//web/api:onos-rest-tests",
 ]
 
 osgi_jar_with_tests(