cleanup and refactoring of notification

close rabbit and redis connexion on application close
Refactoring of Configuration class
fix notification id increment
Add builder for NotificationPush
Add close to notificationPush to remove listener
Clean tags of tests
purge queue before functional tests

src/test/resources/application-test.conf

@@ -0,0 +1,44 @@
+ktor {
+    deployment {
+        port = 8080
+        port = ${?PORT}
+    }
+    application {
+        modules = [ fr.dcproject.ApplicationKt.module ]
+    }
+}
+
+app {
+    envName = test
+    domain = dc-project.fr
+}
+
+db {
+    host = localhost
+    host = ${?DB_HOST}
+    database = test
+    username = test
+    password = test
+    port = 5432
+}
+
+redis {
+    connection = "redis://localhost:6379"
+    connection = ${?REDIS_CONNECTION}
+}
+
+rabbitmq {
+    connection = "amqp://localhost:5672"
+    connection = ${?RABBITMQ_CONNECTION}
+}
+
+elasticsearch {
+    connection = "http://localhost:9200"
+    connection = ${?ELASTICSEARCH_CONNECTION}
+}
+
+mail {
+    sendGrid {
+        key = "abcd"
+    }
+}