Let's go ahead and upgrade s6 to Debian Bullseye + MariaDB 10.4
- dbstore1005 to be handled by Analytics T299481
- db2141 (backup host) T299876
- db2129 (master)
- db2124
- db2117
- db2114
- db2095
- db2089
- db2087
- db2076
- db1180
- db1173 (master)
- db1168
- db1165 (sanitarium master)
- db1155
- db1140 (backup host) T299876
- db1131 (candidate master)
- db1113
- db1098
- db1096
- clouddb1021 to be handled by WMCS T299480
- clouddb1019 to be handled by WMCS T299480
- clouddb1015 to be handled by WMCS T299480