Rename Openstack to OpenStack

Change-Id: I9e5b245141290a4b642900fbc46b98bd4f44c321
Update oslo incubator bits

* update gettextutils.py, strutils.py, install_venv_common.py
* remove cfg.py, openstackkeyring

oslo-incubator commit 630d3959b9d001ca18bd2ed1cf757f2eb44a336f

Change-Id: I0ae9b9dc72ec88ed64a8c353b9c51734ee2cd24c
Merge "Rename Openstack to OpenStack"
Merge "Update oslo incubator bits"
Fix some help strings

This fixes some errors and inconsistencies I found reviewing the
help strings:
* Capitalize help strings
* Add missing space between words (in multi-line strings)
* Improve wording

Change-Id: I2fb31ab4191c330146e31c1a9651115a6657769a
Add ability to prompt for passwords for user create and set

* Add get_password method to the utilities
* Add --password-prompt option
* Call the get_password method if a prompt is requested
* Various tests

Change-Id: I1786ad531e2a2fbcc21b8bc86aac0ccd7985995a
Closes-Bug: 1100116
Merge "Add ability to prompt for passwords for user create and set"
Merge "Fix some help strings"