ensure epel is removed prior to packstack on any distro and doc.

* remove the "when: rhel7" condition
* add doc around why these tasks are present

Change-Id: Ia9ce39a3040ca5d81cf6bd8b215c26dcd3f2c532
Update old vars in snapshot role

Change-Id: I61c737842cd0d2bfadd5191789a4c068c832f3ec
some jobs failing w/ testr command not found

* e.g. 80864119068596/run_tempest.sh: line 38: testr: command not found

Change-Id: I0a06bc10823b1af7c5a29fed73fa6b538e8dae99
install testrepository via pip not rpm

Change-Id: I35767aeee41dfb9f8ab8327de8c6d48f2b98e189
Revert "install testrepository via pip not rpm"

This reverts commit ba75e92d4a429ee951b246cc6acbbe2111edf7a9.

Change-Id: Icb3b16c9780429c8585d9fdf99088f4f4cba959d
fix: install tempest from internal test repo

Change-Id: I6c69394e0f872df4776ca042b39f331167a34480
fix: install tempest from internal test repo

Change-Id: I6c69394e0f872df4776ca042b39f331167a34480
(cherry picked from commit b9c9051899d9d1161b475c8ee01e529fa59c1408)
Merge remote-tracking branch 'gerrit/master' into dev/reorg

Change-Id: I7dfd7ec0262505a4c90fceadd3262fff24f88d52
Moves experimental reorg utils to root

Change-Id: Ia43dde365b05476676ce36eebaa83c73cb638845