stevekieu/epicli repository overview

This is my custom epicli image. For more information about the epiphany-platform project see https://github.com/epiphany-platform/epiphany⁠. These PR hopefully be merged to the main stream at some stage.

Current features supported:

• Azure availability Set
• Reliability improvement on download requirements role
• postgres-exporter role

I focus on 0.6.0_av_pgex at the moment and it would get all latest update thus the latest tag is pointed to that tag.