[kolla] Python 3 status update
How we stand with Python 3 move in Kolla(-ansible) project? Quite good
I would say but there are some issues still.
## Debian/Ubuntu source
Patch for Debian/Ubuntu source images  got 24th revision and depends
on "make sure that there is /var/run/apache2 dir' patch .
CI jobs run fine except 'kolla-ansible-ubuntu-source-ceph' one where
'openstack image create' step fails in 'Run deploy.sh script' .
**Help needed to find out why it fails there as I am out of ideas.**
On x86-64 I was able to deploy all-in-one setup using ubuntu/source images.
Debian/source images require us to first do Ansible upgrade as
'kolla-toolbox' image contains 2.2 version which fails to run with
Python 3.7 present in Debian 'buster'. We agreed to go for Ansible
On AArch64 we have issue with RabbitMQ container failing to run
(restarts all over again). Possible fix on a way.
## CentOS 7 binary
RDO team decided to not provide binary Train packages for CentOS 7 .
This target needs to be replaced with CentOS 8 once it will be fully
build and packages provided by RDO.
## CentOS 7 source
This target will stay with Python 2.7 for now. Once CentOS 8 gets built
we may move to it to get rid of py2.
## Debian binary
Ignored for now. Would need to rebuild whole set of OpenStack packages
from 'experimental' to 'buster'.
## Ubuntu binary
Here we depend on UCA developers and will install whatever they use.
# Kolla ansible
Current version depends on Python 2. Typical "TypeError: cannot use a
string pattern on a bytes-like object" issues need to be solved.