Support URLs

JIRA task: https://tasks.opencraft.com/browse/BB-6295

Why

configuration_version field is sometimes too short for storing branch names, we want to increase that
Grove's instance name length is limited by DigitalOcean, we also want it to limit from where people create and update Grove instance

What

Change configuration_version character limit to 256.
- Checked branch names of open-craft/configuration repository. The longest branch name has 66 characters.
- The purpose of this field is similar to edx_platform_commit which is used to refer to a commit hash or branch name or tag name. Quote from the help text of edx_platform_commit field:

edx-platform commit hash or branch or tag to use. Leave blank to use the default, which is equal to the value of "openedx_release".

Limit instance name of Grove instance to 49 character. The reson is described in grove repository: https://gitlab.com/opencraft/dev/grove/-/blob/1b5625958858e334f91541f942f7bdda4b42627e/tools-container/grove-cli/grove/instance.py#L185-200

Chores

Add missing default configuration keys to .env.test file to allow running in local

Supporting information

Top 10 of lengths of branches in configuration repository

git remote get-url origin                       
git@github.com:open-craft/configuration.git

git branch -a | grep origin | cut -d'/' -f3- | awk '{ print length($0); }' | sort -n -r | uniq -c | head
      1 66
      2 62
      1 56
      1 55
      1 54
      1 53
      1 52
      2 51
      3 50
      4 49

Testing instruction

Grove instance

Expected:

Change on limit of configuration_version is applied
Change on limit of instance name is applied

Steps

Go to admin UI page and login
Create a new Grove instance with 0x29a/bb6112/prepare-maple-configuration-shared-branch as value of configuration version field -> Expect the instance to be created successfully
Edit newly created instance
Input a name that has more than 49 characters to Instance name field
Save -> Expect a validation message raised on exceeding length limit

OpenEdx instance (instances with type other than Grove)

Expected

Change on limit of configuration_version is applied
Change on limit of instance name is not applied

Steps 1 -> 4 same as Grove instance section 5. Save -> Expect no validation message arise and the instance is saved successfully

PoW

Create a Grove instance: https://www.loom.com/share/f5e046ae2b8c4001b963b916c2b556d8
Create a OpenEdx instance: https://www.loom.com/share/80e4a73018194de0a562a62426ccf45a

BB-6295 Change limit for Grove, OpenEdX instances values