Add zuul_version to status.json samples

Change-Id: I6de5ddda6597585944739e5b3dff8c8f86930b1d
Display zuul_version in zuul status page

Change-Id: I81122aaae9f525ceb04a7fbb63cf3111b4770f51
Merge "Add zuul_version to status.json samples"
Merge "Display zuul_version in zuul status page"