Domain Reliability: Update/add configs

components/domain_reliability/baked_in_configs/docs_google_com.json

 {
   "config_version": "docs-google-com-v1",
-  "config_valid_until": 1413331200.0,
+  "config_valid_until": 1425168000.0,
   "monitored_domain": "docs.google.com",
   "collectors": [
     {
       "upload_url": "https://clients2.google.com/domainreliability/upload"
+    },
+    {
+      "upload_url": "https://beacons.gvt2.com/domainreliability/upload"
     }
   ],
   "monitored_resources": [
     {
       "resource_name": "docs-google-com-docs",
       "url_patterns": ["http*://docs.google.com/*/document/*"],
       "success_sample_rate": 0.05,
       "failure_sample_rate": 1.00
     },
     {
       "resource_name": "docs-google-com-slides",
       "url_patterns": ["http*://docs.google.com/*/presentation/*"],
       "success_sample_rate": 0.05,
       "failure_sample_rate": 1.00
     },
     {
       "resource_name": "docs-google-com-sheets",
       "url_patterns": ["http*://docs.google.com/*/spreadsheets/*"],
       "success_sample_rate": 0.05,
       "failure_sample_rate": 1.00
     },
     {
       "resource_name": "docs-google-com-other",
       "url_patterns": ["http*://docs.google.com/*"],
       "success_sample_rate": 0.05,
       "failure_sample_rate": 1.00
     }
   ]
 }