The coe mesos has not been maitenaned for quite some
time and hasn't got much attetion from the community
in general. As discussed in the mailing list [1] we
are dropping for now.
In this patch, we start by removing the mesos driver
and its test cases. This part of the code has no impact
for other drivers. Then we can clean up mesos references
that affect the API.
[1] http://lists.openstack.org/pipermail/openstack-discuss/2021-December/026230.html
Conflicts:
lower-constraints.txt
tox.ini
Change-Id: Ied76095f1f1c57c6af93d1a6094baa6c7cc31c9b
d3d28594b3