add 'local' contactgroup to local environmet monitoring node

Change-Id: I1618a8c7f2f7c905b354dbe363fc91b690725479
 logwatch: ignore postfix errors on lost connection (Bug #6476)

Change-Id: I0b1eec11a3b3da39d65572b6bee8b3ce892e08ac
Deploy leap ca cert for smtp tls config (Bug #6485)

Change-Id: I029ffabd33299a5b42e5f262e372eafb6272d094
Merge branch '6476_ignore_postfix_lost_connection' into develop
Merge branch '6485_deploy_ca_for_smtp_tls_config' into develop