Log Message:
salt: updated to 2018.3.0

2018.3.0:
LOTS OF DOCKER IMPROVEMENTS
FULL API SUPPORT FOR NETWORK MANAGEMENT
CUSTOM SUBNETS
NETWORK CONFIGURATION IN DOCKER_CONTAINER.RUNNING() STATES
USE SALTSSH MINIONS LIKE REGULAR MASTER-MINIONS
EXCEPTIONS RAISED FOR AUTHENTICATION/AUTHORIZATION ERRORS
COMPARISON OPERATORS IN PACKAGE INSTALLATION
MASTER TOPS CHANGES
SEVERAL JINJA FILTERS RENAMED
RETURN CODES FOR RUNNER/WHEEL FUNCTIONS
VARIABLE UPDATE INTERVALS FOR FILESERVER BACKENDS
LDAP VIA EXTERNAL AUTHENTICATION CHANGES
STORMPATH EXTERNAL AUTHENTICATION REMOVED
NEW (PROXY) MINION CONFIGURATION OPTIONS
ENVIRONMENT CONFIG OPTION RENAMED TO SALTENV
LOCK_SALTENV CONFIG OPTION ADDED
FAILED MINIONS FOR STATE/FUNCTION ORCHESTRATION JOBS ADDED TO CHANGES DICTIONARY
NEW GRAINS
SALT MINION AUTO-DISCOVERY