Refine Jenkins job name for better understanding

[hpeng-ibm]

"Tenant" is a little bit confusing. Maybe "Group" is better than "Tenant". For example
“CreateTenant_Base” may be changed to “CreateGroup_Base”.

[kongyi-ibm]

This is a hug change that need to correct the job name and correct all filed name in each job from tenant to group and after that need to do regression testing on it.