User `tileratorui` gets auth error when trying to generate tiles, but user `tilerator` doesn't.
=== Steps to Reproduce:
log into maps2004.codfw.wmnet and generate some tiles (low level) with the following command:
```
sudo -u tileratorui node /srv/deployment/tilerator/deploy/node_modules/tilerator/scripts/tileshell.js --config /etc/tileratorui/config.yaml \
-j.zoom 0 \
-j.fromZoom 0 \
-j.beforeZoom 5 \
-j.generatorId gen \
-j.storageId v4 \
-j.deleteEmpty true \
-j.keepJob true
```
=== Actual Results:
Tilerator throws the following error:
```
Error: Unable to create source "v4"All host(s) tried for query failed. First host tried, 10.192.0.144:9042: Authentic
ationError: Username and/or password are incorrect. See innerErrors.
```
=== Expected Results:
Change the user to `tilerator`and the results are as expected, which is no errors and jobs start running:
```
sudo -u tilerator node /srv/deployment/tilerator/deploy/node_modules/tilerator/scripts/tileshell.js --config /etc/tilerator/config.yaml \
-j.zoom 0 \
-j.fromZoom 0 \
-j.beforeZoom 5 \
-j.generatorId gen \
-j.storageId v4 \
-j.deleteEmpty true \
-j.keepJob true
```