Azure: Increase verbosity for Tox task

This allows to debug issues happened during packages installation:

> -v, --verbose     increase verbosity of reporting output.
-vv mode turns off output redirection for package installation,
above level two verbosity flags are passed through to pip (with two less
level) (default: 0)

Signed-off-by: Stanislav Levin <slev@altlinux.org>
Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>

ipatests/azure/azure-pipelines.yml

@@ -102,7 +102,7 @@ jobs:
         export LANG=en_US.utf8
         export LC_CTYPE=en_US.utf8
         locale
-        $(TOX_COMMAND) -e py3,pypi,pylint3
+        $(TOX_COMMAND) -e py3,pypi,pylint3 -vv
       displayName: Tox
     - task: PublishTestResults@2
       inputs: