API URI format change

Changes API URI format for monitoring and data API.
Fixes tests for API changes.
Adds tempest test and client for monitoring.

APIImpact

Change-Id: Iad2bcacbd2d3b8d4d89919d0bd9b71bdd419092c
Implements: blueprint api-uri-format-change
Fixes doc according to API refactoring

Change-Id: I096b087740b4f6375cd950f75c4787926e626f84
Partially implements: blueprint api-uri-format-change
oslo.messaging update

oslo.messaging has been updated to >=1.4.0,!=1.5.0
oslo.serialization added

Change-Id: I1f5b824f72955a8cb5e8ea82328125f6b98c7766
Merge "API URI format change"
Fixes bug with unicode data

Closes-bug: #1399648
Change-Id: I5397fddeb5fd04582baa48a31fc957f193330f1d
Merge "Fixes bug with unicode data"
Add backup/restore REST API methods

Add stubs (dummy implementations)
for backup/restore REST API methods

Change-Id: Ib0deea3e183bf6a94cdebf3df19dd7151ee3079b
Partially implements blueprint: backup-restore-api
Merge "Fixes doc according to API refactoring"
Merge "Add backup/restore REST API methods"
(WIP) Add backup manager

Change-Id: I44f575b0e87f1ba19113ad5267073ae9edddf0b5