Can no longer include space between 'header-name:' and value

[Tim Burke]

Previously, you could specify additional headers with a command-line like

 swift post -H 'X-Storage-Policy: EC' container

But that now results in an error like

 Invalid return character or leading space in header: x-storage-policy

We can work around this by either downgrading requests to 2.10 or removing the space so it looks like

 swift post -H 'X-Storage-Policy:EC' container

Both of those options suck; we should just .strip() the header when we're parsing it.

[clayg (clay-gerrard)]

nowhey! new requests is mean!? Where's the major version bump new requests?! huh!?

vagrant@saio:~$ pip freeze | grep requests
requests==2.10.0
vagrant@saio:~$ sudo pip install --upgrade requests
Collecting requests
  Downloading requests-2.11.1-py2.py3-none-any.whl (514kB)
    100% |████████████████████████████████| 522kB 2.0MB/s
Installing collected packages: requests
  Found existing installation: requests 2.10.0
    Uninstalling requests-2.10.0:
      Successfully uninstalled requests-2.10.0
Successfully installed requests-2.11.1
vagrant@saio:~$ swift post monkies2 -H 'x-storage-policy: ec'
Invalid return character or leading space in header: x-storage-policy

[clayg (clay-gerrard)]

kinda weird

https://github.com/kennethreitz/requests/issues/3488

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/356802
Committed: https://git.openstack.org/cgit/openstack/python-swiftclient/commit/?id=8fbe118cea8804fe29529a27f3937af412b47fb7
Submitter: Jenkins
Branch: master

commit 8fbe118cea8804fe29529a27f3937af412b47fb7
Author: Tim Burke <email address hidden>
Date: Wed Aug 17 16:01:23 2016 -0700

    Strip leading/trailing whitespace from headers

    New versions of requests will raise an InvalidHeader error otherwise.

    Change-Id: Idf3bcd8ac359bdda9a847bf99a78988943374134
    Closes-Bug: #1614280
    Closes-Bug: #1613814

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/python-swiftclient 3.1.0 release.