Extend requestId capabilities

[willhausman]

Is your feature request related to a problem? Please describe.

1. I am overriding repositoryFactory for integration with my distributed application. I do not have access to requestId to pass on to my other servers.
2. My requestId is currently on a custom header instead of x-request-id.

Describe the solution you'd like

1. repositoryFactory to have requestId available.
2. Option for setting requestId.

Describe alternatives you've considered
I currently set requestId on my authInfo which feels dirty. In my ideal world, I would have a hook to extend whatever I want on the context passed to repositoryFactory, instead of just authInfo.
Of course, I can copy my header to x-request-id, but it still isn't exposed to repositoryFactory.