Summary:
Out of 57 builds in the 5 days during Christmas only 15 were successful.
15 of the failed ones were caused by `com.android.ddmlib.ShellCommandUnresponsiveException` when running unstrumentation tests.
Another 10 were because of crashes probably related to memory usage.
This PR follows ideas from https://github.com/Originate/guide/blob/master/android/guide/Continuous%20Integration.md
So far I've made 6 successful builds with this setup.
Need to run it for a few more days to get accurate stats.
Closes https://github.com/facebook/react-native/pull/5021
Reviewed By: svcscm
Differential Revision: D2795713
Pulled By: androidtrunkagent
fb-gh-sync-id: 33373fed7ca7c5fb83b35cf551f8501286e33d7b
Konstantin Raev