Changes needed for full functionality of tox 4.0.0 runtime

Closes-Bug: #2000867

Signed-off-by: Jiri Podivin <jpodivin@redhat.com>
Change-Id: Iecf59ce89006d215375b02d5ccae30ce223ef709

tox.ini

@@ -38,7 +38,7 @@ deps =
   -r {toxinidir}/requirements.txt
   -r {toxinidir}/test-requirements.txt
   -r {toxinidir}/doc/requirements.txt
-whitelist_externals =
+allowlist_externals =
   bash
   ansible-galaxy
 
@@ -57,7 +57,7 @@ deps =
   -c {env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/train}
   -r {toxinidir}/requirements.txt
   -r {toxinidir}/test-requirements.txt
-whitelist_externals =
+allowlist_externals =
   bash
   cp
   find
@@ -166,7 +166,7 @@ commands=
     doc8 doc
 
 [pdf-docs]
-whitelist_externals = make
+allowlist_externals = make
 description =
   Build PDF documentation.
 envdir = {toxworkdir}/docs