Set local clickhouse container's hostname to clickhouse.dev.local

[onkar]

Currently, when a clickhouse container is running locally, its hostname is randomly picked up by docker runtime. This hostname which also happens to be the container-id is 12 characters long and composed solely of hexadecimal digits. This makes the hostname resolution a problem because the id is dynamically generated and can be only controlled by docker runtime. This PR sets clickhouse container's hostname to clickhouse.dev.local.

In Snuba developement environment, snuba admin is often not run as a docker container on Mac. To resolve the hostnmae from Snuba admin, you have an entry 127.0.0.1 clickhouse.dev.local in /etc/hosts and then clickhouse.dev.local can resolve to 127.0.0.1. On Mac, 127.0.0.1's port 9000 is forwarded to the clickhouse container, thus making it possible to connect to that container.

The corresponding changes in Snuba admin are in getsentry/snuba#6268.

Testing done

onkardeshpande@G260FHW6HW sentry % docker exec -it sentry_clickhouse /bin/bash
root@clickhouse:/# set | grep -i hostname
HOSTNAME=clickhouse.dev.local