Feat/net/controlplane Manage FailureDomain on multipld az

[sebglon]

What type of PR is this?

/kind feature New functionality with test.

What this PR does / why we need it:

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #287, #284

Special notes for your reviewer:
related documentation: kubernetes-sigs/cluster-api#2131
DEPENDENCIES:
#276

Please confirm that if this PR changes any image versions, then that's the sole change this PR makes.

TODOs:

• squashed commits
• includes documentation
• adds unit tests

[gvdhart]

DEPENDENCIES:
#276

[ghost]

@sebglon @gvdhart
Is that PR ready ?
Please rebase now from main ?
And resolve conflict ?

[sebglon]

@outscale-vbr PR is ready

[ghost]

@sebglon @gvdhart
Can you also rebase again from main ?

[ghost]

Error: controllers/oscmachine_vm_controller_unit_test.go:3624:3: expListMachine redeclared
Error: 	controllers/oscmachine_vm_controller_unit_test.go:3621:3: other declaration of expListMachine
Error: controllers/oscmachine_vm_controller_unit_test.go:3693:18: duplicate field name expListMachine in struct literal

[sebglon]

@outscale-vbr fixed

[ghost]

Ok