Adapt to tox 4

tox 4 introduced some changes which broke compatibility. This updates
tox.ini to adopt the change.

This also replaces usage of upstream docker package by one provided by
distro, assuming that is more stable.

Change-Id: I511c5b657386877c6ae3eed57a2e345c6a9e2d70

devstack/plugin.sh

@@ -140,10 +140,15 @@ function configure_swift_and_keystone_for_storlets {
 }
 
 function _install_docker {
+    # Install apparmor to workaround
+    # https://github.com/moby/moby/issues/44900
+    if is_ubuntu; then
+        install_package apparmor
+    fi
+
     # TODO: Add other dirstors.
     # This one is geared towards Ubuntu
     # See other projects that install docker
-
     wget http://get.docker.com -O install_docker.sh
     chmod 755 install_docker.sh
     sudo bash -x install_docker.sh

tox.ini

@@ -1,13 +1,11 @@
 [tox]
 minversion = 3.18.0
 envlist = py36,py38,py39,pep8
-skipsdist = True
 ignore_basepython_conflict = True
 
 
 [testenv]
 basepython = python3
-usedevelop = True
 setenv =
    VIRTUAL_ENV={envdir}
    PYTHONPATH={toxinidir}/StorletSamples/python:{envdir}
@@ -26,7 +24,6 @@ commands =
 allowlist_externals =
   bash
   find
-  rm
 
 [testenv:pep8python]
 commands =
@@ -41,7 +38,7 @@ setenv =
    VIRTUAL_ENV={envdir}
    STORLET_SAMPLE_PATH={toxinidir}/StorletSamples
    CLUSTER_CONF_DIR={toxinidir}
-commands = {toxinidir}/.functests jenkins
+commands = bash -c "{toxinidir}/.functests jenkins"
 
 [testenv:venv]
 commands = {posargs}