Merge remote-tracking branch 'upstream/develop' into develop
Merge remote-tracking branch 'upstream/develop' into develop
add master_sign_key_name and generation of the actual sign-key-files if activated
make MasterKeys() more flexible by allowing different key-names.

MasterKeys() should be able to handle more than one hardcoded key.
The default is still to just handle master.* files but can also generate
new key-pairs with different names and return the pub-key.
fix join()'s to form the correct file names
add key name to logging output
add settings for master and minion to sign the public / verify pubkey signature

Add a setting for the master to generate a new signing key-pair for signing purposes
and use the key-pair to sign the masters public key that is send to authenticated
minions.

Add a setting for the minion to verify the signature of a public key received from
the master. Requires to have the signing key-pair from the master on the minion.
Add optional signing of the master pubkey if enabled in config.

Uses salt.crypt.sign_message() to create a signature of the pubkey
and adds that signature to the payload send to authenticated minions.
add verification of signed master pubkeys

Adds the verification of the master pubkey by checking the pubkey
signature in payload['pub_sig'] with the signing keypairs pubkey.
Merge remote-tracking branch 'upstream/develop' into sign_master_keys
cleanup and add some more comments
fix path to signing pubkey
lint fixes
Merge remote-tracking branch 'upstream/develop' into develop
Refined support for yum branch plugin
git_pillar: removed unnecessary loop, moved config check to runner
Don't exit CLI when file permission error
Add CLI options for username and password
Inform user if unable to access publisher
Add tests for pam auth