Add open-iscsi and nfs-common to ubuntu stemcells

[gberche-orange]

As a bosh release author,
In order to leverage software-defined storage systems such as requested in #87 or longhorn requiring open-iscsi
I need the open-iscsi package to be installed in ubuntu stemcells

This is currently the case in softlayer stemcells but not in bosh-vsphere-esxi-ubuntu-jammy-go_agent (e.g. 1.829)

bosh-linux-stemcell-builder/bosh-stemcell/spec/stemcells/ubuntu_spec.rb

Lines 256 to 270 in 3bcd52a

	context 'installed by system_softlayer_open_iscsi', {
	exclude_on_alicloud: true,
	exclude_on_aws: true,
	exclude_on_cloudstack: true,
	exclude_on_google: true,
	exclude_on_vsphere: true,
	exclude_on_vcloud: true,
	exclude_on_warden: true,
	exclude_on_openstack: true,
	exclude_on_azure: true,
	} do
	describe package('open-iscsi') do
	it { should be_installed }
	end
	end

Bosh releases have to carry the burden of stemcell dependent iscii package compilation. See cloudfoundry/nfs-volume-release#682 and https://github.com/cloudfoundry/nfs-volume-release/commits/develop/packages/nfs-debs/packaging

[beyhan]

Why not install this as a bosh-addon?

[gberche-orange]

@beyhan thanks for your reponse up and sorry for late response.

Why not install this as a bosh-addon?

Sure, however the struggle is not about the bosh deployment manifest (where bosh add-on can help reduce duplication among deployments), but the bosh release authoring, specifically the packaging and compiling with either

• package creation including kernel modules
• package vendoring potentially from https://github.com/cloudfoundry/nfs-volume-release/commits/develop/packages/nfs-debs/packaging