HttpHeaders support (similar to docker client)

[kpavel]

Signed-off-by: Pavel Kravchenko kpavel@il.ibm.com

Docker client already supports HttpHeaders from config file.
https://docs.docker.com/v1.7/docker/reference/commandline/cli/
Leveraging existing configuration file support in python docker client added support for generic HttpHeaders.

[shin-]

This line seems unnecessary.

[shin-]

Thanks for your contribution!

I made a few comments, and the branch also needs to be rebased.

[kpavel]

Thanks for your review!
Fixed and rebased.

[shin-]

LGTM.

[dnephin]

I think this could use a new test case. I don't see anything asserting these are read properly.

[tombee]

Is this PR just missing a test to check HttpHeaders are read from the ~/.docker/config.json file?

@kpavel Are you able to add this test? Would be great to get this PR merged.

[GordonTheTurtle]

Please sign your commits following these rules:
https://github.com/docker/docker/blob/master/CONTRIBUTING.md#sign-your-work
The easiest way to do this is to amend the last commit:

$ git clone -b "autz" git@github.com:kpavel/docker-py-1.git somewhere
$ cd somewhere
$ git rebase -i HEAD~2
editor opens
change each 'pick' to 'edit'
save the file and quit
$ git commit --amend -s --no-edit
$ git rebase --continue # and repeat the amend for each commit
$ git push -f

Ammending updates the existing PR. You DO NOT need to open a new one.

[tombee]

Awesome work @kpavel! 👍

[shin-]

Closed via #899 - Thanks!