CDMI 2.0.0 Spec - Update to Technical Position

[dslik]

The following changes need to be made to reflect that the membership vote has approved SNIA 2.0.0 as a Technical Position:

• Update the date to "2020-09-11"
• Update the version to "2.0.0"
• Update to be a "SNIA Technical Position"
• Incorporate changes from SNIA Technical Position Template

[dslik]

Completed and checked in.