Add delete account metadata method - was missing from API Ref page

backport: havana

Change-Id: I4e10ff6bf6b70d4dc4e12302ce0e03e69332f1dc
author: diane fleming
Fix os-server-password extension

Closes-Bug: #1200481

Change-Id: Ief051f2a2c225d2a34efafa7ef5701c1c35e4057
author: diane fleming
Merge "Add delete account metadata method - was missing from API Ref page"