move JWT secret into ENV

src/test/resources/application-test.conf

@@ -37,3 +37,9 @@ mail {
         key = "abcd"
     }
 }
+
+jwt {
+    secret = "zAP5MBA4B4Ijz0MZaS48"
+    issuer = "dc-project.fr"
+    validity = 36000000
+}