Fix serverinfo API for WMAgent
DBSStatus is not used anymore
Remove not used component status
Remove not used insertbuffer
PEP 8 style changes
Wrong variable name and close connection when exception is thrown.
Fix race condition in T0 block insert
Merge pull request #277 from giffels/dbs3-block-insert-fix

Fix race condition in T0 block insert
Merge pull request #276 from giffels/dbs3-comparision-fix

Dbs3 comparision fix
Merge pull request #275 from giffels/dbs3-fix-serverinfo

Dbs3 fix serverinfo
Fix race condition found in T0 replay test. YG
Better exception handle for IntegrityError. YG
Merge pull request #278 from yuyiguo/To-replay2

To replay2
take crab off the check of processed ds name. YG
using DBSUser function for create_by/last_modified_by validation, catching ORA-01400 and return back to client on what is missing. YG
fix indentation. YG
Merge pull request #281 from yuyiguo/HG1401-patch1

Hg1401 patch1