feat(nomad): improved nomad support

[lukasmetzner]

This PR adds better support for our integration with Nomad. Although not officially supported, we would like to improve the developer experience and integrate automated e2e tests to avoid breaking Nomad integrations with future csi-driver releases.

The Terraform module for creating a Nomad (+Consul) cluster on Hetzner Cloud can be found here.

Steps, that still need to be done:

• Add e2e tests to the CI pipeline
• After initial nomad-dev-env release, add renovate comment to nomad/dev/main.tf
• Update docs/nomad/README.md

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 174 lines in your changes missing coverage. Please review.

Project coverage is 32.38%. Comparing base (ffaf6ba) to head (53f20dc).
Report is 4 commits behind head on main.

Files with missing lines	Patch %	Lines
test/e2e/nomad/utils.go	0.00%	174 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #798      +/-   ##
==========================================
- Coverage   35.34%   32.38%   -2.97%     
==========================================
  Files          20       21       +1     
  Lines        1901     2075     +174     
==========================================
  Hits          672      672              
- Misses       1195     1369     +174     
  Partials       34       34              

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[lukasmetzner]

With respect to version testing:
The community edition only includes support for the current major version.

Enterprise users will have access to more support for the current major version and the two previous major versions. In addition, there are LTS versions available.

Further information can be found here. Running enterprise products requires the license to be present on startup.

[apricote]

Regarding the tested versions:

I think we should start with the latest version only. If there are many Nomad enterprise users who would like to see the csi-driver tested against older/enterprise versions we can reach out to our contacts at Hashicorp to see if they can provide the licenses for that.

[apricote]

One more thing: There are a lot of files with missing newline at eof. Could you add it to all the files?

[apricote]

Very nice! Just a nit :)