Lock required angular version to 1.6.2

This locks the angular version to v1.6.2. This should help avoid any
future breaking changes as well as force status.o.o to update from
1.5.0.

Change-Id: I623571bfb732935b7665ff0bc314063656df8536

package.json

@@ -6,9 +6,9 @@
   "repository": "none",
   "license": "Apache 2.0",
   "devDependencies": {
-    "angular": "^1.5.0",
+    "angular": "1.6.2",
     "angular-fontawesome": "^0.4.0",
-    "angular-mocks": "^1.5.0",
+    "angular-mocks": "1.6.2",
     "angular-ui-bootstrap": "^1.2.3",
     "angular-ui-router": ">=0.2.16 <0.3.0",
     "angularjs-filters": "^0.0.2",