chore(saucelabs): interrupt if saucelabs tunnel does not start (#1747)

scripts/browserstack/waitfor_tunnel.sh

@@ -2,18 +2,18 @@
 
 
 # Wait for Connect to be ready before exiting
-# Time out if we wait for more than 2 minutes, so that we can print logs.
+# Time out if we wait for more than 2 minutes, so the process won't run forever.
 let "counter=0"
 
 while [ ! -f $BROWSER_PROVIDER_READY_FILE ]; do
   let "counter++"
+
   if [ $counter -gt 240 ]; then
-    echo "Timed out after 2 minutes waiting for browser provider ready file"
-    # We must manually print logs here because travis will not run
-    # after_script commands if the failure occurs before the script
-    # phase.
-    ./scripts/ci/print-logs.sh
+    echo
+    echo "Timed out after 2 minutes waiting for tunnel ready file"
     exit 5
   fi
+
+  printf "."
   sleep .5
 done