Boot from Volume Server Delete V1

* Added new module for testing Deletes around V1 boot from volume
* Fixed PEP8 issues
* Moved Preserved Delete in separate class
* Removed not core additional not needed checks in order to reduce the function size to core checks
* Added extra lines before comments also removed extra resource clean statement
* Separating Persistant and AUto delete as per Daryl comment
* Adding available volume check per Jose request
* Fixing comment typo
* Removed Delete tests in persistent case

Change-Id: Iaa1779a61cab50cd89b31c889711d4b53591e53b
Merge "Boot from Volume Server Delete V1"