feat: add default message conf with null provider

Signed-off-by: Yuriy Movchan <Yuriy.Movchan@gmail.com>

jans-linux-setup/jans_setup/templates/configuration.ldif

@@ -1,5 +1,6 @@
 dn: ou=configuration,o=jans
 jansCacheConf: {"cacheProviderType": "%(cache_provider_type)s", "memcachedConfiguration": {"servers":"localhost:11211", "maxOperationQueueLength":100000, "bufferSize":32768, "defaultPutExpiration":60, "connectionFactoryType": "DEFAULT"}, "inMemoryConfiguration": {"defaultPutExpiration":60}, "nativePersistenceConfiguration": {"defaultPutExpiration":60, "defaultCleanupBatchSize": 10000}, "redisConfiguration":{"servers":"localhost:6379", "defaultPutExpiration": 60}}
+jansMessageConf: {"messageProviderType": "NULL", "postgresConfiguration": {"db-schema-name":"public", "message-wait-millis": 100, "message-sleep-thread-millis": 200}, "redisConfiguration":{"servers":"localhost:6379"}}
 jansDocStoreConf: {"documentStoreType":"LOCAL","localConfiguration":{"baseLocation":"/"},"jcaConfiguration":{"serverUrl":"http://localhost:8080/rmi","workspaceName":"default","connectionTimeout":15,"userId":"admin","password":""},"webDavConfiguration":null}
 jansDbAuth: {"type": "auth", "name": null, "level": 0, "priority": 1, "enabled": false, "version": 0, "config": {"configId": "auth_ldap_server", "servers": ["%(ldap_hostname)s:%(ldaps_port)s"], "maxConnections": 1000, "bindDN": "%(ldap_binddn)s", "bindPassword": "%(ldap_bind_encoded_pw)s", "useSSL": "true", "baseDNs": ["ou=people,o=jans"], "primaryKey": "uid", "localPrimaryKey": "uid", "useAnonymousBind": false, "enabled": false}}
 jansSmtpConf: {"key_store":"%(smtp_jks_fn)s", "key_store_password":"%(smtp_jks_pass_enc)s", "key_store_alias":"%(smtp_alias)s", "signing_algorithm":"%(smtp_signing_alg)s"}