Rely on FAM for much of the foreman_provisioning setup

[ekohl]

This isn't tested now and needs some proper review. I'll highlight some questions inline.

[ekohl]

This together with #1866 can mean we no longer need Hammer and we can drop this bit:

forklift/roles/foreman_provisioning/meta/main.yml

Line 3 in 4f7e13e

- role: hammer_credentials

I also wonder if we should move this into foreman_provisioning and drop the foreman_provisioning_infrastructure role.

[ekohl]

@evgeni this is taken from the examples in https://theforeman.github.io/foreman-ansible-modules/develop/plugins/compute_profile_module.html#ansible-collections-theforeman-foreman-compute-profile-module but the description says it's a list, so should it be

Suggested change

	0:
	type: network
	network: provision
	model: virtio
	- type: network
	network: provision
	model: virtio

[ekohl]

I couldn't find this on https://theforeman.github.io/foreman-ansible-modules/develop/plugins/user_module.html#ansible-collections-theforeman-foreman-user-module and I'm wonder how this even works.