postgres volume name change prevents upgrading from 0.9.0 to 0.9.1.

[myersCody]

in 0.9.0 the docker volume for the db was qpc-data. However, we renamed it to be db-data in the master branch version of the installer to be more user friendly for downstream.

[root@vcentos7 qpc_tools]# docker volume ls
DRIVER              VOLUME NAME
local               5e7fd405cca7ec2bb9280c6cfa47b8ed2087733fd7db5ecdb86c47a75dbca064
local               042211d447dd4aa67ad1a76f382d1c970a351c3a1605da815b0f468a4371076d
local               db6eacbd91ed3e4643af3046f5120c6a46fe67f6d59af6577dde61b603ddbbce
local               qpc-data

We should change the name back to qpc-data, and downstream it should changed to dsc-data.