change default password ClickHouse

clickhouse/users.xml

@@ -52,7 +52,7 @@
                  Execute: PASSWORD=$(base64 < /dev/urandom | head -c8); echo "$PASSWORD"; echo -n "$PASSWORD" | openssl dgst -sha1 -binary | openssl dgst -sha1
                  In first line will be password and in second - corresponding double SHA1.
             -->
-            <password>HAHA</password>
+            <password>secret</password>
 
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