Clarify that it is only all_saltenvs which is new in Oxygen
Clarify that it is only all_saltenvs which is new in Oxygen

Depending on how you read it, the previous version may have suggested
that all of the per-remote parameters are new in Oxygen. This makes it
more explicit that the all_saltenvs param is the only one new to Oxygen.

saltstack/salt,saltstack/salt,saltstack/salt,saltstack/salt,saltstack/salt