[COMMON] Add a shellcheck tox profile

Shellcheck is a shell linter.
It can include good remarks as well as false positives.
It is currently not activated in the CI.

Issue-ID: OOM-2643
Signed-off-by: guillaume.lambert <guillaume.lambert@orange.com>
Change-Id: Ie392ce030f877ab6bdca9e91d7f8ec6820f34d79
diff --git a/tox.ini b/tox.ini
index 337b397..01019bb 100644
--- a/tox.ini
+++ b/tox.ini
@@ -62,6 +62,13 @@
 commands =
     {toxinidir}/.ci/check-bashisms.sh
 
+[testenv:shellcheck]
+basepython = python3
+deps = shellcheck-py
+whitelist_externals = find
+commands =
+    find . -not -path '*/\.*' -name *.sh -exec shellcheck \{\} +
+
 [testenv:autopep8]
 deps =
     -r{toxinidir}/requirements.txt