To avoid many merge conflicts and re-works
* Solum
* iscsi
* Keystone
* elasticsearch

Change-Id: Ibaecda35597cf39c602919b4990579f7cfc75c22
Co-Authored-By: caoyuan <cao.yuan@99cloud.net>
Co-Authored-By: qiankun.zhang <zhangqiankun@sgitg.sgcc.com.cn>
Partially-implements: blueprint condition-pre-check