[Xray] Add xray test repo api (#894)
[Xray] Add xray test repo api (#894)

* [JIRA] Optimize error msg

* [Xray] Add test repo relavant APIs

Co-authored-by: Johnny Huang <062384ee2eb794862519476bd4f5dd298cbf6c73@telenavsoftware.com>
AstroTech/atlassian-python-api,AstroTech/atlassian-python-api