chore(Saucelabs): increase max session duration

We have amassed so many e2e tests, that the default 30 minute
Saucelabs session limit is often not enough, especially during
the week, when the VMs are under heavy load.

protractor-travis-conf.js

@@ -79,6 +79,8 @@ function capabilitiesForSauceLabs(capabilities) {
     'browserName': capabilities.browserName,
     'platform': capabilities.platform,
     'version': capabilities.version,
-    'elementScrollBehavior': 1
+    'elementScrollBehavior': 1,
+    // Allow e2e test sessions to run for a maximum of 35 minutes, instead of the default 30 minutes.
+    'maxDuration': 2100
   };
 }