sw-patch command fails

[Eric MacDonald]

Brief Description
-----------------
Attempting to patch the system using the sw-patch command fails due to a python 'from builtins import input' error.

Severity
--------
Critical: system patching is broken

Steps to Reproduce
------------------
sudo sw-patch upload <patch>

Expected Behavior
------------------
patch upload should succeed

Actual Behavior
----------------
sw-patch command fails with the following error

[wrsroot@controller-0 ~(keystone_admin)]$ sudo sw-patch upload ./SYSINV_01.patch
Password:
Traceback (most recent call last):
  File "/usr/sbin/sw-patch", line 12, in <module>
    from cgcs_patch.patch_client import main
  File "/usr/lib64/python2.7/site-packages/cgcs_patch/patch_client.py", line 8, in <module>
    from builtins import input
ImportError: No module named builtins

Reproducibility
---------------
Issue is 100% reproducible every time.

System Configuration
--------------------
All

Branch/Pull Time/Commit
-----------------------
Aug 31

Timestamp/Logs
--------------
Refer to actual behavior section above.

[Don Penney (dpenney)]

Any sw-patch command is broken, so running "sw-patch query" or "sw-patch query-hosts" (both can be run without sudo) would show the error.

[Ghada Khalil (gkhalil)]

This issue was introduced by:
https://review.openstack.org/#/c/598077/

The current plan is to revert the above commit to address this issue

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/599007
Committed: https://git.openstack.org/cgit/openstack/stx-update/commit/?id=cede41ecf8990e2d9d24da25dd2c29d92c6857cc
Submitter: Zuul
Branch: master

commit cede41ecf8990e2d9d24da25dd2c29d92c6857cc
Author: Don Penney <email address hidden>
Date: Fri Aug 31 15:31:30 2018 +0000

    Revert "Fix raw_input issue for Python 2/3 compatible code."

    This reverts commit 2d1e3b7981ff7b4ff8619a71d6dd569526d99c0e.

    This update causes an import failure for the sw-patch CLI command,
    as the "builtins" module is not currently part of the load.

    Change-Id: I9f71f001dd36ccd769b888fbf45cba105e7bcde2
    Closes-bug: 1790166