cli bundle init ssh support

[Cupprum]

Describe the issue

When i call the databricks bundle init <SSH-PATH> command, i want to be able to fetch the template from GitHub Enterprise over SSH.

Steps to reproduce the behavior

1. Get GitHub Enterprise repo - Find a repository which is stored under Github Enterprise. The url in your browser should follow similar pattern: https://.ghe.com//. It should NOT start with https://github.com
2. Get the SSH link to the repo - Store the value in Code -> Local -> SSH for future use.
3. Create dummy template - Upload a dummy databricks_template_schema.json file into the root folder of the repository.
4. Create a dummy project to test the template - Create a new folder somewhere on your computer which is going to be used for template testing.
5. Run - Call the databricks bundle init command from the new folder, use the SSH link to the repo which we retrieved previously. In my case it is databricks bundle init company@company.ghe.com/company/databricks-cli-template.git' --template-dir coffee_sales_example

Expected Behavior

The bundle gets initiated using the provided template which is downloaded from Github enterprise over SSH.

Actual Behavior

After executing the command, i get the following error: ```
Error: not a bundle template: expected to find a template schema file at databricks_template_schema.json
exit status 1

### OS and CLI version
CLI version `Databricks CLI v1.4.0`, tested in a Fedora Docker devcontainer in Bash and also on Windows in Powershell.

### Is this a regression?
No.

### Debug Logs
[root@45ac4a58cd7c temp]# databricks bundle init 'company@company.ghe.com:company/databricks-cli-template' --log-level=debug
14:06:07 Info: start pid=84525 version=1.4.0 args="databricks, bundle, init, company@company.ghe.com:company/databricks-cli-template, --log-level=debug"
14:06:07 Debug: profile "xxx" resolved from [__settings__].default_profile pid=84525
14:06:07 Debug: Loading "xxx" profile from /root/.databricks/.databrickscfg pid=84525 sdk=true
14:06:07 Debug: [Local Cache] using cache key: xxx pid=84525
14:06:07 Debug: [Local Cache] cache hit pid=84525
14:06:07 Debug: Resolved cloud from hostname: "AWS" pid=84525 sdk=true
14:06:07 Debug: Resolved token_audience from host metadata token_federation_default_oidc_audiences: "https://xxx.cloud.databricks.com/oidc/v1/token" pid=84525 sdk=true
14:06:07 Debug: Resolved discovery_url from host metadata: "https://xxx.cloud.databricks.com/oidc/.well-known/oauth-authorization-server" pid=84525 sdk=true
Error: not a bundle template: expected to find a template schema file at databricks_template_schema.json
14:06:07 Info: failed execution pid=84525 exit_code=1 error="not a bundle template: expected to find a template schema file at databricks_template_schema.json"
14:06:07 Debug: no telemetry logs to upload pid=84525
[root@45ac4a58cd7c temp]#

[Cupprum]

This was already discussed a bit in this issue: #2137

The issue is, that when a user tries to create a bundle based on the template, the databricks bundle init command needs to figure out if its a local template, or in a git repo. This logic is done here template/resolver.go. The current filter looks at the provided 'Link' and based on that decides if its a local file, or a git repo.

Currently SSH is supported only through SCP-like urls, and specifically only the ones which start with git@. So if your git clone .... does not start with git@.... you are out of luck, and the CLI will try to search for the template locally.

[Cupprum]

I have a fork of databricks cli, where i was able to make this work by adding a single line of code.

[janniklasrose]

Thanks for reporting! Indeed, our list of gitUrlPrefixes appears incomplete given the spec. I will get this updated