u/fuel: Bump & rebase for image pre-install

u/fuel: Bump & rebase for image pre-install

1. Bump to latest Fuel@OPNFV to include:
   - Bring in newer glusterfs for mtime unsplit brain
     * Requires adding arch "arm64" to PPA definition in reclass:
       - (reclass-system) linux.system.repo.glusterfs: Add arm64 arch
   - Switch nofeature-ha compute nodes to UCA repo
     * Requires an alternative way of adding linux.enea.com repos;
     * linux.enea.com repos will now be pre-install into VM images;
     * Requires refresh on repo arch list handled by Armband patch:
       - (fuel) baremetal, virtual: Extend arch list for UCA repo

2. Staging proposed patches from upstream Fuel@OPNFV:
   - Add pre-{install,purge} support for base image
     * Reference implementation adds pre-installed Armband specifics:
       - Enea public GPG to APT keys (for below repos);
       - repos (linux.enea.com/{apt-mk,mcp-repos}/*);
       - linux-{image,headers}-generic-hwe-16.04-edge;
       - cloud-init: datasource from NoCloud only;
     * Allows us to drop kernel installation from state files,
       installing the kernel only once during image prep, instead of
       two stages of parallel installs (5 baremetal, 14 VCP);
     * Ensures Armband repos are pre-configured for infrastructure
       VMs, allowing us to drop more reclass repo definitions;
     * Rework armband patch to install kernel only on kvm, cmp:
       - (fuel) baremetal: linux-image-generic-hwe-16.04-edge

3. Sync reclass repo definitions with upstream change, drop duplicates
   - [linux][repos] Remove unused repositories [1]
     * Upstream dropped all "ocata-{security,hotfix,...} repo comps,
       which are also empty for Armband, so drop them too;
     * Rework following armband patches:
       - (reclass-system) linux/system/repo/mcp: Add Armband repos
         * Move Armband repos to new dedicated reclass classes:
           - linux.system.repo.mcp.armband.extra (currently empty);
           - linux.system.repo.mcp.armband.openstack;
         * Use HTTPS for fetching Enea Armband GPG key;
       - (fuel) baremetal: Add Armband Openstack repos to kvm, cmp
         * Consume defs introduced above only on baremetal nodes;

4. Sync documentation with Fuel@OPNFV (cp)

5. Add vim swap files to .gitignore

[1] https://github.com/Mirantis/reclass-system-salt-model/commit/1dd1b31

Change-Id: Ibab56279de86f08ad7cd9bc6761f4c525532f811
Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>