Import and clean vmm provided configuration files

config/dovecot/conf.d/10-master.conf

@@ -0,0 +1,43 @@
+service imap-login {
+  inet_listener imap {
+    port = 143
+  }
+  inet_listener imaps {
+    port = 993
+  }
+}
+
+service lmtp {
+  unix_listener /var/spool/postfix/private/dovecot-lmtp {
+    user = postfix
+    group = postfix
+    mode = 0600
+  }
+}
+
+service auth {
+  user = doveauth
+  unix_listener auth-userdb {
+  }
+  unix_listener /var/spool/postfix/private/dovecot-auth {
+    user = postfix
+    group = postfix
+    mode = 0600
+  }
+}
+
+service auth-worker {
+  unix_listener auth-worker {
+    user = mail
+    group = $default_internal_user
+    mode = 0660
+  }
+  user = mail
+}
+
+service dict {
+  unix_listener dict {
+    group = mail
+    mode = 0660
+  }
+}