add role ldap operations on silver

- to replace formey

RT #6134

after the LDAP admin permissions have
been turned into a role in I39f8f613f426

it is just applying the role now

silver as suggested by Ariel on #6134

Change-Id: I491ef14f06ba0adeef417658a6afdbfbfd1f674d
Merge "add role ldap operations on silver" into production