update azure environment passing to new required but undocumented format

.azure-pipelines/templates/jobs/extended-tests-jobs.yml

@@ -18,7 +18,7 @@ jobs:
           PYTHON_VERSION: 3.11
           TOXENV: py311
         linux-isolated:
-          TOXENV: 'isolated-{acme,certbot,apache,cloudflare,digitalocean,dnsimple,dnsmadeeasy,gehirn,google,linode,luadns,nsone,ovh,rfc2136,route53,sakuracloud,nginx}'
+          TOXENV: 'isolated-acme,isolated-certbot,isolated-apache,isolated-cloudflare,isolated-digitalocean,isolated-dnsimple,isolated-dnsmadeeasy,isolated-gehirn,isolated-google,isolated-linode,isolated-luadns,isolated-nsone,isolated-ovh,isolated-rfc2136,isolated-route53,isolated-sakuracloud,isolated-nginx'
         linux-boulder-v2-integration-certbot-oldest:
           PYTHON_VERSION: 3.8
           TOXENV: integration-certbot-oldest

.azure-pipelines/templates/steps/tox-steps.yml

@@ -44,7 +44,7 @@ steps:
       export TARGET_BRANCH="`echo "${BUILD_SOURCEBRANCH}" | sed -E 's!refs/(heads|tags)/!!g'`"
       [ -z "${SYSTEM_PULLREQUEST_TARGETBRANCH}" ] || export TARGET_BRANCH="${SYSTEM_PULLREQUEST_TARGETBRANCH}"
       env
-      python3 -m tox
+      python3 -m tox run
     env:
       AWS_ACCESS_KEY_ID: $(AWS_ACCESS_KEY_ID)
       AWS_SECRET_ACCESS_KEY: $(AWS_SECRET_ACCESS_KEY)

tox.ini

@@ -2,6 +2,7 @@
 # mypy doesn't current pass for us on Windows. Fixing that is being tracked by
 # https://github.com/certbot/certbot/issues/7803.
 envlist = {cover,lint}-{win,posix},mypy
+
 skipsdist = true
 
 [base]
@@ -99,6 +100,7 @@ commands =
     {[testenv:cover]coverage_report} --fail-under 100 --include certbot-apache/*
     {[testenv:cover]common_coverage_report_commands}
 
+# Another workaround for https://github.com/tox-dev/tox/issues/2858 in tox v4.
 [testenv:cover-posix]
 commands = {[testenv:cover]commands}