Minor fix in stage-test to add TOX_PARALLEL_NO_SPINNER

Change-Id: Ifc960e639c3ec8fae680fc7234239447803b6b40
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
diff --git a/devops-stages/stage-test.sh b/devops-stages/stage-test.sh
index 7d00a00..993823a 100755
--- a/devops-stages/stage-test.sh
+++ b/devops-stages/stage-test.sh
@@ -13,5 +13,5 @@
 # limitations under the License.
 
 echo "Launching tox"
-tox --parallel=auto
+TOX_PARALLEL_NO_SPINNER=1 tox --parallel=auto