Fix AWS compiler errors when using the MPSGameLiftGem

Signed-off-by: AMZN-Gene <[email protected]>

MPSGameLift/gem.json

@@ -21,6 +21,8 @@
     "documentation_url": "Link to any documentation of your Gem",
     "dependencies": [
         "AWSGameLift", 
+        "AWSClientAuth",
+        "HttpRequestor",
         "LyShine"
     ],
     "repo_uri": "",