Upgrade docker setup to PostgreSQL 10 (improvement)

[gannebamm]

The current docker-compose uses geonode/postgis 9.6

geonode/docker-compose.yml

Line 5 in 77e0fe3

image: geonode/postgis:9.6

as image. PostgreSQL 10.x is allready in production and widely adopted, afaik. Are there good reasons to not upgrade the docker setup to use PostgreSQL 10.x? And which special settings/ modifications where made to the default PostgreSQL 9.6 for geonode.

I would like to fork, upgrade, test and later PR this enhancement.

[giohappy]

From our experience nothing blocks from using PG10. We already adopt it in some deployments along GeoNode.

[t-book]

If you install on bionic you end with postgres10 as well. Haven´t run into any problems yet.

+1

[gannebamm]

See #4192 and GeoNode/postgis-docker#1

[francbartoli]

@gannebamm I guess we can close this via #4192, am I right?

[gannebamm]

@francbartoli yes