Bug 1052009 - Enable CloudSync in Nightly. r=rnewman

browser/confvars.sh

@@ -31,6 +31,7 @@ MOZ_SERVICES_CRYPTO=1
 MOZ_SERVICES_HEALTHREPORT=1
 MOZ_SERVICES_METRICS=1
 MOZ_SERVICES_SYNC=1
+MOZ_SERVICES_CLOUDSYNC=1
 MOZ_APP_VERSION=$FIREFOX_VERSION
 MOZ_EXTENSIONS_DEFAULT=" gio"
 # MOZ_APP_DISPLAYNAME will be set by branding/configure.sh