Changed pendflag and succedent flag to segment flag and pending ack flag so semantics changed
[salt] begin nova states

Starting with volumes existing, because that is the only one I care
about right this second.
Some refactoring of segmentation
Merge pull request #10662 from gtmanfred/nova

[salt] begin nova states
Fixes for nova module

Fixed a NameError and potential KeyError. Also added versionadded RST
directives where appropriate.
Finished refactor of segmentation
removed now obsolete bl and cl fields from header
Merge remote-tracking branch 'upstream/develop' into sam_raet_8

Conflicts:
	salt/transport/road/raet/test/test_packeting.py
Merge pull request #10665 from SmithSamuelM/sam_raet_8

Sam raet 8
Merge pull request #10664 from terminalmage/nova

Fixes for nova module