Replace yaml.load by yaml.safe_load

Change-Id: I4f6c3802e40d763fc2175dbb2bd94dbc79b813c2
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
diff --git a/tox.ini b/tox.ini
index b26bb35..39aa70d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -48,7 +48,7 @@
         coverage report --omit='*tests*'
         coverage html -d ./cover --omit='*tests*'
         coverage xml -o coverage.xml --omit=*tests*
-whitelist_externals = sh
+allowlist_externals = sh
 
 
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