Limit client tagging to PTL groups.

Gerrit ACL files previously assigned client prerelease and release
tagging responsibility to milestone groups for official OpenStack
projects. This change switches that role to rely on the
corresponding PTL groups instead.

Change-Id: I103349d6e5ecdeefeac87a625856a54795d06a84
Reviewed-on: https://review.openstack.org/25806
Reviewed-by: Clark Boylan <clark.boylan@gmail.com>
Reviewed-by: Thierry Carrez <thierry@openstack.org>
Reviewed-by: matthew-wagoner <matthew.wagoner@hp.com>
Reviewed-by: James E. Blair <corvus@inaugust.com>
Reviewed-by: Monty Taylor <mordred@inaugust.com>
Approved: James E. Blair <corvus@inaugust.com>
Tested-by: Jenkins
Remove separate pyflakes job for oslo.config.

Change-Id: I9742b8ee6b26a6cfd251057e628e3f419fca09f5
Reviewed-on: https://review.openstack.org/26299
Reviewed-by: James E. Blair <corvus@inaugust.com>
Approved: James E. Blair <corvus@inaugust.com>
Tested-by: Jenkins
Move hacking and pbr to their own teams.

The set of people who work on both of these are a hybrid between
oslo folks and infra folks. Enable them.

Change-Id: I191771907821b51252dfddd9718c133ad016e4cb
Reviewed-on: https://review.openstack.org/26326
Reviewed-by: James E. Blair <corvus@inaugust.com>
Reviewed-by: Jeremy Stanley <fungi@yuggoth.org>
Approved: James E. Blair <corvus@inaugust.com>
Tested-by: Jenkins
Check find's output in Jenkins' translation scripts.

* modules/jenkins/files/slave_scripts/propose_translation_update.sh:
Instead of evaluating find's output in test treat finds output as a
string and check if that string is null to determine if find found any
.po files. This is a more reliable way to check for the presence of .po
files as it does not result in confusing test.

* modules/jenkins/files/slave_scripts/upstream_translation_update.sh:
Instead of evaluating find's output in test treat finds output as a
string and check if that string is null to determine if find found any
.po files. This is a more reliable way to check for the presence of .po
files as it does not result in confusing test.

Change-Id: I53f7cc47e3762e4529eaf72f457852e650413b16
Reviewed-on: https://review.openstack.org/26346
Reviewed-by: James E. Blair <corvus@inaugust.com>
Approved: James E. Blair <corvus@inaugust.com>
Tested-by: Jenkins