use latest-1 for e2e tests

Author: Narretz

protractor-travis-conf.js

@@ -9,7 +9,7 @@ if (process.env.BROWSER_PROVIDER === 'browserstack') {
     capabilitiesForBrowserStack({
       browserName: 'chrome',
       platform: 'MAC',
-      version: '49'
+      version: 'latest-1'
     }),
     capabilitiesForBrowserStack({
       browserName: 'firefox',
@@ -29,7 +29,7 @@ if (process.env.BROWSER_PROVIDER === 'browserstack') {
     capabilitiesForSauceLabs({
       browserName: 'chrome',
       platform: 'OS X 10.11',
-      version: '48'
+      version: 'latest-1'
     }),
     capabilitiesForSauceLabs({
       browserName: 'firefox',