feat: allow vmtemplate selection based on tags

[pborn-ionos]

• (sourceNode + templateID) and templateSelector are supposed to be mutually exclusive
• automatically detects both sourceNode + templateID
• errors out if anything but one (1) VM template with desired flags was found

Issue #, if available:
#338

Description of changes:
Allows selecting the vm template via

spec:
  template:
    spec:
      templateSelector:
        matchTags:
        - capi
        - capmox
        - template
        - v1.28.3

on ProxmoxMachineTemplate objects.

Testing performed:

• successfully provisioned machines using the existing sourceNode+templateID and the new templateSelector options
• successfully errored out, when multiple, or zero, templates with matching tags were found

[github-actions]

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[wikkyk]

Hm indeed that's not how I'd expect selection by tag to work, either. I shouldn't need to pass the exact tags, just enough tags to get a result.

[mcbenjemaa]

Hm indeed that's not how I'd expect selection by tag to work, either. I shouldn't need to pass the exact tags, just enough tags to get a result.

what about multiple VMs has the same matchTags
what would you suggest in this case?

discussion ongoing

[wikkyk]

You need to pass enough tags to get a unique result. I agree with you though that you shouldn't need to pass all the tags a template has.

[github-actions]

External PR

Test runs on external PRs require manual approval.

[wikkyk]

We had a chat about this and decided to keep this behaviour and document it.

[github-actions]

External PR

Test runs on external PRs require manual approval.

[mcbenjemaa]

Fix the lint and you are good to go.

[github-actions]

External PR

Test runs on external PRs require manual approval.

[github-actions]

External PR

Test runs on external PRs require manual approval.

Note: This PR changes the following non-go, non-docs files:
config/crd/bases/infrastructure.cluster.x-k8s.io_proxmoxclusters.yaml
config/crd/bases/infrastructure.cluster.x-k8s.io_proxmoxclustertemplates.yaml
config/crd/bases/infrastructure.cluster.x-k8s.io_proxmoxmachines.yaml
config/crd/bases/infrastructure.cluster.x-k8s.io_proxmoxmachinetemplates.yaml

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
92.1% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud