v0.13.0

Changelog

d730e6c fixed tests
7e32de4 implemented code review suggestion
ae4c070 host preflights can produce multiple results
eef54d0 force timezone to upper case

Docker images

• docker pull replicated/preflight:0
• docker pull replicated/preflight:0.13
• docker pull replicated/preflight:0.13.0
• docker pull replicated/troubleshoot:0
• docker pull replicated/troubleshoot:0.13
• docker pull replicated/troubleshoot:0.13.0