Fix agent's missing registry entries warning on Windows agents
Fix agent's missing registry entries warning on Windows agents

The error wording was overall not accurate and in many cases not overly
useful so now we clearly specify that this is something that only
happens on server-provided credentials and the warning has been dialed
down to a notice since this is more common than node-provided
authentication.

conjur/puppet,conjurinc/puppet,conjur/puppet,conjurinc/puppet