Fix passenv syntax in tox and update python jobs

This updated the Python jobs and fixes the following error with tox 4:

tox.tox_env.errors.Fail: pass_env values cannot contain whitespace, use
comma to have multiple values in a single line, invalid values found
'http_proxy HTTP_PROXY https_proxy HTTPS_PROXY no_proxy NO_PROXY
PBR_VERSION'PROXY PBR_VERSION'

Change-Id: I003723766b1dba7f54c9800364207191597c6741

.zuul.yaml

@@ -205,7 +205,7 @@
 - project:
     templates:
       - openstack-cover-jobs
-      - openstack-python3-zed-jobs
+      - openstack-python3-jobs
       - publish-openstack-docs-pti
       - periodic-stable-jobs
       - check-requirements

tox.ini

@@ -18,7 +18,7 @@ commands =
 allowlist_externals =
   bash
   find
-passenv = http_proxy HTTP_PROXY https_proxy HTTPS_PROXY no_proxy NO_PROXY PBR_VERSION
+passenv = http_proxy,HTTP_PROXY,https_proxy,HTTPS_PROXY,no_proxy,NO_PROXY,PBR_VERSION
 
 [testenv:pep8]
 deps =
@@ -72,16 +72,7 @@ commands = {posargs}
 commands =
   find keystone -type f -name "*.pyc" -delete
   oslo_debug_helper {posargs}
-passenv =
-    KSTEST_ADMIN_URL
-    KSTEST_ADMIN_USERNAME
-    KSTEST_ADMIN_PASSWORD
-    KSTEST_ADMIN_DOMAIN_ID
-    KSTEST_PUBLIC_URL
-    KSTEST_USER_USERNAME
-    KSTEST_USER_PASSWORD
-    KSTEST_USER_DOMAIN_ID
-    KSTEST_PROJECT_ID
+passenv = KSTEST_*
 
 [testenv:functional]
 deps =
@@ -92,16 +83,7 @@ commands =
   find keystone -type f -name "*.pyc" -delete
   stestr run {posargs}
   stestr slowest
-passenv =
-    KSTEST_ADMIN_URL
-    KSTEST_ADMIN_USERNAME
-    KSTEST_ADMIN_PASSWORD
-    KSTEST_ADMIN_DOMAIN_ID
-    KSTEST_PUBLIC_URL
-    KSTEST_USER_USERNAME
-    KSTEST_USER_PASSWORD
-    KSTEST_USER_DOMAIN_ID
-    KSTEST_PROJECT_ID
+passenv = KSTEST_*
 
 [flake8]
 filename= *.py,keystone-manage