Set explicit password for default user in attempt to fix intermittent CI failures on latest

Suggestion from https://stackoverflow.com/a/71802893

Author: AndrewSpeed

clickhouse-config/node1/remote-servers.xml

@@ -7,23 +7,27 @@
         <replica>
           <host>node1</host>
           <port>9000</port>
+          <password>clickhouse_password</password>
         </replica>
         <replica>
           <host>node2</host>
           <port>9000</port>
+          <password>clickhouse_password</password>
         </replica>
       </shard>
       <shard>
         <internal_replication>true</internal_replication>
         <replica>
           <host>node3</host>
           <port>9000</port>
+          <password>clickhouse_password</password>
         </replica>
         <replica>
           <host>node4</host>
           <port>9000</port>
+          <password>clickhouse_password</password>
         </replica>
       </shard>
     </cluster>
   </remote_servers>
-</clickhouse>
+</clickhouse>

clickhouse-config/node2/remote-servers.xml

@@ -7,23 +7,27 @@
         <replica>
           <host>node1</host>
           <port>9000</port>
+          <password>clickhouse_password</password>
         </replica>
         <replica>
           <host>node2</host>
           <port>9000</port>
+          <password>clickhouse_password</password>
         </replica>
       </shard>
       <shard>
         <internal_replication>true</internal_replication>
         <replica>
           <host>node3</host>
           <port>9000</port>
+          <password>clickhouse_password</password>
         </replica>
         <replica>
           <host>node4</host>
           <port>9000</port>
+          <password>clickhouse_password</password>
         </replica>
       </shard>
     </cluster>
   </remote_servers>
-</clickhouse>
+</clickhouse>

clickhouse-config/node3/remote-servers.xml

@@ -7,23 +7,27 @@
         <replica>
           <host>node1</host>
           <port>9000</port>
+          <password>clickhouse_password</password>
         </replica>
         <replica>
           <host>node2</host>
           <port>9000</port>
+          <password>clickhouse_password</password>
         </replica>
       </shard>
       <shard>
         <internal_replication>true</internal_replication>
         <replica>
           <host>node3</host>
           <port>9000</port>
+          <password>clickhouse_password</password>
         </replica>
         <replica>
           <host>node4</host>
           <port>9000</port>
+          <password>clickhouse_password</password>
         </replica>
       </shard>
     </cluster>
   </remote_servers>
-</clickhouse>
+</clickhouse>

clickhouse-config/node4/remote-servers.xml

@@ -7,23 +7,27 @@
         <replica>
           <host>node1</host>
           <port>9000</port>
+          <password>clickhouse_password</password>
         </replica>
         <replica>
           <host>node2</host>
           <port>9000</port>
+          <password>clickhouse_password</password>
         </replica>
       </shard>
       <shard>
         <internal_replication>true</internal_replication>
         <replica>
           <host>node3</host>
           <port>9000</port>
+          <password>clickhouse_password</password>
         </replica>
         <replica>
           <host>node4</host>
           <port>9000</port>
+          <password>clickhouse_password</password>
         </replica>
       </shard>
     </cluster>
   </remote_servers>
-</clickhouse>
+</clickhouse>

compose.yaml

@@ -1,5 +1,7 @@
 x-base-service: &base-service
   image: clickhouse/clickhouse-server:${CLICKHOUSE_VERSION:-23.6.2.18}
+  environment:
+    CLICKHOUSE_PASSWORD: "clickhouse_password"
   restart: always
   ulimits:
     nofile:

tests/settings.py

@@ -19,6 +19,7 @@
 DATABASES = {
     "default": {
         "ENGINE": "clickhouse_backend.backend",
+        "PASSWORD": "clickhouse_password",
         "OPTIONS": {
             "migration_cluster": "cluster",
             "connections_min": 1,
@@ -35,6 +36,7 @@
     },
     "s1r2": {
         "ENGINE": "clickhouse_backend.backend",
+        "PASSWORD": "clickhouse_password",
         "PORT": 9001,
         "OPTIONS": {
             "migration_cluster": "cluster",
@@ -52,6 +54,7 @@
     },
     "s2r1": {
         "ENGINE": "clickhouse_backend.backend",
+        "PASSWORD": "clickhouse_password",
         "PORT": 9002,
         "OPTIONS": {
             "migration_cluster": "cluster",