Use python3-devel in bindep for rpm distros

python36-devel is not available in rpm distro's
like CentOS9-Stream or Fedora35.

Let's use python3-devel instead which is provided
in all these distro's instead of maintaining versioned
specific like:-
- python36-devel fo CentOS8-Stream
- python3.9-devel for CentOS9-Stream
- python3.10-devel for Fedora35

Also add openstack-tox-py310 override to
tox-override template as that was not added
with [1].

[1] https://review.opendev.org/c/openstack/neutron/+/833047

Change-Id: I238e6b7f87d3e007d474dfffa515f7d9a348246b

bindep.txt

@@ -1,7 +1,7 @@
 # This file contains runtime (non-python) dependencies
 # More info at: http://docs.openstack.org/infra/bindep/readme.html
 
-python36-devel [platform:rpm]
+python3-devel [platform:rpm]
 
 # tools/misc-sanity-checks.sh validates .po[t] files
 gettext [test]

zuul.d/job-templates.yaml

@@ -23,6 +23,9 @@
         - openstack-tox-py39: # from openstack-python3-zed-jobs template
             timeout: 3600
             irrelevant-files:  *irrelevant-files
+        - openstack-tox-py310: # from openstack-python3-zed-jobs template
+            timeout: 3600
+            irrelevant-files:  *irrelevant-files
         - openstack-tox-lower-constraints:  # from openstack-tox-lower-constraints template
             timeout: 3600
             irrelevant-files:  *irrelevant-files