Aadded positive and negative backup tests

REBASED after reddwarf to trove namechange

Fixed reddwarfclient to troveclient import

Added some bug fixes in code

Change-Id: I507734358f9aa680c5460ebccc2b0114f31e96be
fixed _verify_databases

Change-Id: I59da2dbd7e8368c4fbd799c5d57f13ae7e33ea87
Merge branch 'backup_pub' of github.com:nateben/trove into backup_pub2

Conflicts:
	trove/tests/api/backups.py

Change-Id: I43aa391c1204f437e779c0ea5ea25031caba36d6