STORAGEMODEL-287 refactoring DeviceIdentificationPage on top of instruct's Buffer

Note that this change requires commits in:
* storagemodel
* asi
* smock
* integration_tests
STORAGEMODEL-286 inquiry page 'b2h
STORAGEMODEL-288 refactoring inquiriy pages on top of instruct's Buffer

this work is spread across:
* asi
* storagemodel
* smock
* integration-tests
STORAGEMODEL-288 fixing UnknownVPDPageCommand
STORAGEMODEL-288 fixing SupportedVPDPagesBuffer
STORAGEMODEL-288 fixing json pages
STORAGEMODEL-288 fixing DeviceIdentificationVPDPageBuffer
STORAGEMODEL-288 fixing LogicalBlockProvisioningPageCommand
buildout.cfg: remove infi.instruct>=0.6.18 from requirements
buildout.cfg: adding infi.instruct>=0.6.25 to requirements
Finished release v0.3.27.

* release/v0.3.27:
  buildout.cfg: adding infi.instruct>=0.6.25 to requirements
  buildout.cfg: remove infi.instruct>=0.6.18 from requirements
  STORAGEMODEL-288 fixing LogicalBlockProvisioningPageCommand
  STORAGEMODEL-288 fixing DeviceIdentificationVPDPageBuffer
  STORAGEMODEL-288 fixing json pages
  STORAGEMODEL-288 fixing SupportedVPDPagesBuffer
  STORAGEMODEL-288 fixing UnknownVPDPageCommand
  STORAGEMODEL-288 refactoring inquiriy pages on top of instruct's Buffer
  STORAGEMODEL-286 inquiry page 'b2h
  STORAGEMODEL-287 refactoring DeviceIdentificationPage on top of instruct's Buffer