Upgrade Pex to 1.1.11.

[objmagic]

resolves #1051

In this PR, I will restart CI many times to see if the same error will happen again...

[billonahill]

Looks good, thanks for doing this. Would you also please verify this branch in twitter's internal CI.

[kramasamy]

@objmagic - can you check with our internal version as @billonahill pointed out so that we can merge this?

[billonahill]

👍

[kramasamy]

@objmagic and @nlu90 - can this PR be merged if internal CIs work?

[objmagic]

@kramasamy yes

[billonahill]

One more think to check is to make sure the docker builds work. Once that's verified I think it's fine to merge.

[objmagic]

@kramasamy @billonahill

Internal CI passed. I can also build and run on Docker following steps here.

I'll go ahead to merge it if everyone think it's fine.

[nlu90]

👍 for internal jenkins CI

[objmagic]

@benley do you want to have a look at this PR?

[billonahill]

👍

[benley]

I think you might be missing some updates to pex/bin/pex.py; here's what that diff looks like from my repo: https://github.com/benley/bazel_rules_pex/pull/6/files#diff-da6b827279fc47e8b1603fe3af0f4a0e

The changes are pretty minor, so maybe you deliberately didn't include them?

[benley]

Aside from that, 👍

[objmagic]

@benley I applied your patch: 37f9d74 and I can build fine.

[objmagic]

Travis CI, internal CI, Docker build all passed, again.