Log Message:
salt: updated to 2019.2.0

2019.2.0:
- NON-BACKWARD-COMPATIBLE CHANGE TO YAML RENDERER
- ANSIBLE PLAYBOOK STATE AND EXECUTION MODULES
- NETWORK AUTOMATION
- NEW DOCKER PROXY MINION
- GRAINS DICTIONARY PASSED INTO CUSTOM GRAINS
- MORE PRECISE VIRTUAL GRAIN
- CONFIGURABLE MODULE ENVIRONMENT
- “VIRTUAL PACKAGE” SUPPORT DROPPED FOR APT
- MINION STARTUP EVENTS
- FAILHARD CHANGES
- PASS THROUGH OPTIONS TO FILE.SERIALIZE STATE
- FILE.PATCH STATE REWRITTEN
- NEW NO_PROXY MINION CONFIGURATION
- CHANGES TO SLACK ENGINE
- ENHANCEMENTS TO WTMP BEACON