Ran into a little issue I wanted to log here.
After installing the Salt Minions on the servers we were getting the following error when running apt-get update:
W: GPG error: http://repo.saltstack.com trusty InRelease: The following signatures couldn’t be verified because the public key is not available: NO_PUBKEY 0E08A149DE57BFBE
This was a simple fix with:
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys <Key>