baremetal, virtual: Bump kernel to hwe-18.04 (5.0)

On some aarch64 platforms (e.g. ThunderX 1), lvcreate manifests some
spurious timing issues resulting in incomplete/corrupted LVM thin

creation and eventually to transaction ID mismatch between userspace
and kernel space.

This eventually leads to cinder-volume issues, either when creating
the thin storage pool (vgroot-pool) and/or when creating the LVs
inside said pool.

The issue manifests spuriously on Ubuntu Bionic + UCA, so until a
working combination of userspace/kernel is found, work around this
by bumping the kernel package to hwe-18.04 (kernel 5.0),
effectively bypassing the timing issues during volume creation.

This affects all cluster machines (both HA and NOHA scenarios,
baremetal and virtual, x86_64 and aarch64, baremetal and virtualized
nodes).

Note: Ubuntu Bionic cloud image partition handling requires e2fsprogs
1.43, not currently available on Ubuntu Xenial / CentOS 7.

Change-Id: I839e03080104c391fe18185b9544c9df43c114e6
Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

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