Summary:
Fixes the iOS OSS job which was failing. The root cause of the problem is as follows:
- RSocket was referring the master branch of rsocket/rsocket-cpp, fixed it by forking it and making its own release, unfortunately they don't make a release.
- Folly referred to the January's release. The current master branch of RSocket doesn't build with the latest release of the Folly, [this commit](b51dc569eb) is responsible for the breakage. Thus I made a Rsocket release, right before this [commit](b51dc569eb), so that it builds.Although, the current master branch of Folly builds with the current master branch of rsocket, but we will have to wait on Folly team to make a release. Once they do that I will update bit RSocket and Folly releases.
Reviewed By: jknoxville
Differential Revision: D14668686
fbshipit-source-id: 6b0362632c26355a69a3f33a031b71c88e7dd45b