configure clickhouse user

clickhouse/values.yaml

@@ -81,7 +81,22 @@ clickhouse: &clickhouse_config
     # -- Use an existing config map object.
     existingConfigMap: ''
     # -- Map of configuration files as strings.
-    files: {}
+    files:
+      custom-users.xml: |
+        <clickhouse>
+          <users>
+            <default>
+              <password></password>
+              <networks>
+                <ip>::/0</ip>
+                <ip>0.0.0.0/0</ip>
+              </networks>
+              <profile>default</profile>
+              <quota>default</quota>
+              <access_management>1</access_management>
+            </default>
+          </users>
+        </clickhouse>
       # file1.yml: |
       #   # contents
       # file2.yml: |