fix: [mongo] use host datastore if available

mongo/lib/common

@@ -9,12 +9,26 @@ export DATA_DIR=$SERVICE_DATASTORE$DB_DATADIR
 
 
 is_db_locked() {
-    is_volume_used "${DATA_DIR}"
+    local host_db_volume
+    if [ "${HOST_DATASTORE+x}" ]; then
+        host_db_volume="$HOST_DATASTORE/${SERVICE_NAME}$DB_DATADIR"
+    else
+        host_db_volume="$DATASTORE/${SERVICE_NAME}$DB_DATADIR"
+    fi
+
+    is_volume_used "$host_db_volume"
 }
 
 
 _set_server_db_params() {
-    server_docker_opts+=("-v" "${SERVICE_CONFIGSTORE}/etc/mongod.conf:/etc/mongod.conf"
+    local host_config_volume
+    if [ "${HOST_DATASTORE+x}" ]; then
+        host_config_volume="$HOST_CONFIGSTORE/${SERVICE_NAME}"
+    else
+        host_config_volume="$CONFIGSTORE/${SERVICE_NAME}"
+    fi
+
+    server_docker_opts+=("-v" "${host_config_volume}/etc/mongod.conf:/etc/mongod.conf"
                          "--add-host" "${SERVICE_NAME}:127.0.0.1")
 }