Add openstack regression test runner

[dosaboy]

Run the Openstack release tests from charmed-openstack-tests.

[dosaboy]

Currently getting the following error because ceph units do not have enough storage:

root@juju-efd3bb-zaza-c4f5cb82f94b-4:/home/ubuntu# ceph -s
  cluster:
    id:     d6be62ca-7cde-11ef-bc82-5d4897b1b779
    health: HEALTH_ERR
            clock skew detected on mon.juju-efd3bb-zaza-c4f5cb82f94b-6
            3 full osd(s)
            7 pool(s) full
 
  services:
    mon: 3 daemons, quorum juju-efd3bb-zaza-c4f5cb82f94b-4,juju-efd3bb-zaza-c4f5cb82f94b-5,juju-efd3bb-zaza-c4f5cb82f94b-6 (age 91m)
    mgr: juju-efd3bb-zaza-c4f5cb82f94b-6(active, since 90m), standbys: juju-efd3bb-zaza-c4f5cb82f94b-4, juju-efd3bb-zaza-c4f5cb82f94b-5
    mds: 1/1 daemons up
    osd: 3 osds: 3 up (since 89m), 3 in (since 90m)
 
  data:
    volumes: 1/1 healthy
    pools:   7 pools, 157 pgs
    objects: 2.98k objects, 23 GiB
    usage:   69 GiB used, 3.4 GiB / 72 GiB avail
    pgs:     157 active+clean

[dosaboy]

they are getting staging-cpu1-ram4-disk20 flavor atm

[dosaboy]

bundle has:

  ceph-osd:
    charm: ch:ceph-osd
    num_units: 3
    options:
      source: *source
    storage:
      osd-devices: cinder,24G
    constraints: mem=4096
    channel: *ceph-channel

[dosaboy]

# ceph df
--- RAW STORAGE ---
CLASS    SIZE    AVAIL    USED  RAW USED  %RAW USED
hdd    72 GiB  3.4 GiB  69 GiB    69 GiB      95.34
TOTAL  72 GiB  3.4 GiB  69 GiB    69 GiB      95.34
 
--- POOLS ---
POOL              ID  PGS   STORED  OBJECTS     USED   %USED  MAX AVAIL
.mgr               1    1  449 KiB        2  1.3 MiB  100.00        0 B
ceph-fs_data       2    4      0 B        0      0 B       0        0 B
ceph-fs_metadata   3   16  4.0 KiB       22   96 KiB  100.00        0 B
manila-ganesha     4   32      4 B        3   12 KiB  100.00        0 B
gnocchi            5    8     14 B        1   12 KiB  100.00        0 B
glance             6   64   23 GiB    2.95k   68 GiB  100.00        0 B
cinder-ceph        7   32      0 B        0      0 B       0        0 B

[dosaboy]

names of images synced to glance:

+---------------------------------------------------------------+
| name                                                          |
+---------------------------------------------------------------+
| cirros_alt                                                    |
| bionic                                                        |
| fedora-coreos                                                 |
| auto-sync/ubuntu-jammy-22.04-amd64-server-20240912-disk1.img  |
| amphora-haproxy-x86_64-ubuntu-22.04-20240912                  |
| noble                                                         |
| fedora-coreos                                                 |
| cirros                                                        |
| jammy                                                         |
| auto-sync/ubuntu-focal-20.04-amd64-server-20240821-disk1.img  |
| auto-sync/ubuntu-xenial-16.04-amd64-server-20211001-disk1.img |
| auto-sync/ubuntu-trusty-14.04-amd64-server-20191107-disk1.img |
| focal                                                         |
| auto-sync/ubuntu-bionic-18.04-amd64-server-20230607-disk1.img |
+---------------------------------------------------------------+

[pponnuvel]

Some nit picks. Otherwise looks good to me.