Add ISO mounting to Workflow boot options

[jacobweinstock]

Description

Add ISO mounting capabilities to Workflow (spec) boot options. This is similar to the netboot option but with a virtual media mount and CDROM as the next boot device. This refactors the Workflow spec to be able to handle both network boot and iso booting.

Current Workflow spec example:

apiVersion: tinkerbell.org/v1alpha1
kind: Workflow
metadata:
  name: example1
  namespace: tink-system
spec:
  hardwareMap:
    device_1: 01:02:03:04:05:06
  templateRef: myTemplate
  hardwareRef: example1
  bootOptions:
    toggleAllowNetboot: true
    oneTimeNetboot: true

New Workflow spec example for network booting a machine:

apiVersion: tinkerbell.org/v1alpha1
kind: Workflow
metadata:
  name: example1
  namespace: tink-system
spec:
  hardwareMap:
    device_1: 01:02:03:04:05:06
  templateRef: myTemplate
  hardwareRef: example1
  bootOptions:
    toggleAllowNetboot: true
    bootMode: netboot

New Workflow spec example for ISO booting a machine:

apiVersion: tinkerbell.org/v1alpha1
kind: Workflow
metadata:
  name: example1
  namespace: tink-system
spec:
  hardwareMap:
    device_1: 01:02:03:04:05:06
  templateRef: myTemplate
  hardwareRef: example1
  bootOptions:
    toggleAllowNetboot: true
    bootMode: iso
    isoURL: http://192.168.2.113:7171/ipxe/ipxe.iso

Why is this needed

Fixes: #

How Has This Been Tested?

How are existing users impacted? What migration steps/scripts do we need?

Upgrade:

1. Update the workflow CRD

   kubectl replace -f https://raw.githubusercontent.com/tinkerbell/tink/refs/heads/main/config/crd/bases/tinkerbell.org_workflows.yaml

2. Update the tink controller Role

   kubectl replace -f https://raw.githubusercontent.com/tinkerbell/tink/refs/heads/main/config/manager-rbac/role.yaml -n tink-system

3. Update tink controller and tink server images

   kubectl set image -n tink-system deployment/tink-controller tink-controller=quay.io/tinkerbell/tink-controller:latest
   kubectl set image -n tink-system deployment/tink-server server=quay.io/tinkerbell/tink-server:latest

Checklist:

I have:

• updated the documentation and/or roadmap (if required)
• added unit or e2e tests
• provided instructions on how to upgrade

[codecov]

Codecov Report

Attention: Patch coverage is 51.28866% with 189 lines in your changes missing coverage. Please review.

Project coverage is 30.86%. Comparing base (2fb5e40) to head (8997356).
Report is 14 commits behind head on main.

Files with missing lines	Patch %	Lines
internal/deprecated/workflow/hardware.go	28.76%	43 Missing and 9 partials ⚠️
internal/deprecated/workflow/job.go	61.78%	36 Missing and 11 partials ⚠️
internal/deprecated/workflow/reconciler.go	43.18%	24 Missing and 1 partial ⚠️
internal/deprecated/workflow/post.go	0.00%	23 Missing ⚠️
internal/deprecated/workflow/pre.go	76.00%	10 Missing and 8 partials ⚠️
cmd/tink-controller/main.go	0.00%	15 Missing ⚠️
internal/deprecated/workflow/journal/journal.go	78.12%	3 Missing and 4 partials ⚠️
internal/server/kubernetes_api_workflow.go	33.33%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1008      +/-   ##
==========================================
+ Coverage   30.06%   30.86%   +0.80%     
==========================================
  Files          71       75       +4     
  Lines        3739     3923     +184     
==========================================
+ Hits         1124     1211      +87     
- Misses       2539     2617      +78     
- Partials       76       95      +19     

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