Random CI failures due to Bazel OOM

[alexeagle]

Typically looks like
Server terminated abruptly
e.g.
https://circleci.com/gh/angular/angular/48332?utm_campaign=vcs-integration-link&utm_medium=referral&utm_source=github-build-link

Our theory is that this was caused by bazel 0.14.0 update, and bazel 0.14.1 has a fix, so we just need to update again.

/cc @gregmagolan

[alexeagle]

Bazel 0.14.1 does not seem to fix it, so I think we need to revert the upgrade commit :(

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