Major changes:
* Plumbing necessary for strict confinement with
the microstack-support interface
https://github.com/snapcore/snapd/pull/8926
* Until the interface is merged, devmode will be used and kernel
modules will be loaded via an auxiliary service.
* upgraded OpenStack components to Focal (20.04) and OpenStack Ussuri;
* reworked the old patches;
* added the Placement service since it is now separate;
* addressed various build issues due to changes in snapcraft and
built dependencies:
* e.g. libvirt requires the build directory to be separate from the
source directory) and LP: #1882255;
* LP: #1882535 and https://github.com/pypa/pip/issues/8414
* LP: #1882839
* LP: #1885294
* https://storyboard.openstack.org/#!/story/2007806
* LP: #1864589
* LP: #1777121
* LP: #1881590
* ML2/OVS replated with ML2/OVN;
* dnsmasq is not used anymore;
* neutron l3 and DHCP agents are not used anymore;
* Linux network namespaces are only used for
neutron-ovn-metadata-agent.
* ML2 DNS support is done via native OVN mechanisms;
* OVN-related database services (southbound and northbound dbs);
* OVN-related control plane services (ovn-controller, ovn-northd);
* core20 base support (bionic hosts are supported);
* the removal procedure now relies on the "remove" hook since `snap
remove` cannot be used from the confined environment anymore;
* prerequisites to enabling AppArmor confinement for QEMU processes
created by the confined libvirtd.
* Added the Spice html5 console proxy service to enable clients to
retrieve and use it via
`microstack.openstack console url show --spice <servername>`.
* Added missing Cinder templates and DB migrations for the Cinder DB.
* Added experimental support for a loop device-based LVM backend for
Cinder. Due to LP: #1892895 this is not recommended to be used in
production except for tempest testing with an applied workaround;
* includes iscsid and iscsi-tcp kernel module loading;
* includes LIO and loading of relevant kernel modules;
* An LVM PV is created on top of a loop device with a backing file
present in $SNAP_COMMON/cinder-lvm.img;
* A VG is created on top of the PV;
* LVs are created by Cinder and exported via LIO over iscsi to iscsid
which hot-plugs new SCSI devices. Those SCSI devices are then
propagated by Nova to libvirt and QEMU during volume attachment;
* Added post-deployment testing via rally and tempest (via the
microstack-test snap). A set of tests included into Refstack 2018.02
is executed (except for object storage tests due to the lack of object
storage support).
Change-Id: Ic70770095860a57d5e0a55a8a9451f9db6be7448
780a4c4ead