Ignore owner when checking omero.data.dir is accessible

[manics]

What this PR does

The owner/permissions check on the OMERO data dir is too strict, for example it will fail if owned by root even if it is group accessible.

Testing this PR

1. Create a new OMERO data dir
2. Make it owned by root
3. Change the group of the data dir to one that the user that will be running OMERO.server is a member of
4. Make the OMERO data dir group readable/writeable
5. Start the server and it should work!

Related reading

• https://trello.com/c/qndSyho7/532-omero-admin-datadir-owner-check-is-too-strict

---

Ported from ome/openmicroscopy#5884

• See also https://forum.image.sc/t/import-data-to-omero-permission-denied/29427/6

[mtbc]

$ omero config get omero.data.dir
/home/mtbc/var/omero/
$ ls -ld /home/mtbc/var/omero/
drwxrwxr-x 2 root mtbc 4096 Apr 22 11:03 /home/mtbc/var/omero/
$ ls /home/mtbc/var/omero/
$ omero admin start
FATAL: OMERO directory which needs to be writeable belongs to root: /home/mtbc/var/omero/
Please use "chown -R NEWUSER /home/mtbc/var/omero/" and run as then run /tmp/omero/bin/omero as NEWUSER
$ pip install -U /tmp/omero-py-5.6.3.dev0.tar.gz 
...
Successfully installed omero-py-5.6.2
$ omero admin start
Creating /tmp/OMERO.server-5.6.0-162-891359e-ice36-b418/var/master
Initializing /tmp/OMERO.server-5.6.0-162-891359e-ice36-b418/var/log
Creating /tmp/OMERO.server-5.6.0-162-891359e-ice36-b418/var/registry
No descriptor given. Using etc/grid/default.xml
Waiting on startup. Use CTRL-C to exit
$ ls -l /home/mtbc/var/omero/
total 16
drwxr-xr-x 2 mtbc mtbc 4096 Apr 22 11:27 BioFormatsCache
drwxr-xr-x 2 mtbc mtbc 4096 Apr 22 11:28 Files
drwxr-xr-x 2 mtbc mtbc 4096 Apr 22 11:27 FullText
drwxr-xr-x 3 mtbc mtbc 4096 Apr 22 11:28 ManagedRepository
$ 

Import, web, etc. all work fine.

[imagesc-bot]

This pull request has been mentioned on Image.sc Forum. There might be relevant details there:

https://forum.image.sc/t/omero-helm-charts/40444/2