Change postgres mount dir and pgdata to make persistent data work

Updated postgres mount path and pgdata dir to support persistent data

mentioned in issue #26 (closed)

@twk3 Thoughts on this?

One comment, but otherwise looks good.

This fixes the problem that existed where:

• /var/lib/postgres was our persistent storage
• /var/lib/postgres/data was listed as a volume in the postgres dockerfile, and was mounted as a non-persistent volume
• resulted in the data dir being lost, and our persistent volume not having any content to persist (because the data dir was just a mount within it)

added 1 commit

• 9a9b5e37 - Per merge discussion, moving PGDATA out of config map and defining in deployment manifest

Compare with previous version

resolved all discussions

merged

mentioned in commit 0c36b916