[#241] rest: Provide common params with `.yml` file

Signed-off-by: Pavel Karpy <p.karpy@yadro.com>

services/rest_gate/cfg/config.yml

@@ -0,0 +1,8 @@
+server:
+  # The IP and port to listen on.
+  listen-address: 0.0.0.0:8090
+
+# Wallet settings
+wallet:
+  path: /wallet.json # Path to wallet
+  passphrase: one # Password to decrypt wallet

services/rest_gate/docker-compose.yml

@@ -15,12 +15,11 @@ services:
     volumes:
       - ./wallet.json:/wallet.json
       - ./../../vendor/hosts:/etc/hosts
+      - ./cfg:/etc/frostfs/rest
     stop_signal: SIGKILL
     env_file: [ ".env", ".int_test.env" ]
+    command: [ "frostfs-rest-gw", "--config", "/etc/frostfs/rest/config.yml" ]
     environment:
-      - REST_GW_WALLET_PATH=/wallet.json
-      - REST_GW_WALLET_PASSPHRASE=one
-      - REST_GW_SERVER_LISTEN_ADDRESS=0.0.0.0:8090
       - REST_GW_POOL_PEERS_0_ADDRESS=s01.${LOCAL_DOMAIN}:8080
       - REST_GW_POOL_PEERS_1_ADDRESS=s02.${LOCAL_DOMAIN}:8080
       - REST_GW_POOL_PEERS_2_ADDRESS=s03.${LOCAL_DOMAIN}:8080