Remove factor parameter from BACnet and IPMI plugins and introduce a generic factor parameter in SensorBase

Reverse ordering of dcdb.sensordata table for better ScyllaDB performance and reverse it again in libdcdb to retain the original ordering

Reverse ordering of dcdb.sensordata table for better ScyllaDB performance and reverse it again in libdcdb to retain the original ordering

Revert "Whitelist only the specified Cassandra server for connections" to support the Murmur3 Partitioner used in ScyllaDB

This reverts commit d153944d.

- We now use parallel asynchronous queries on multiple sensors

Move io_context creation out of AnalyticsController into main() and pass it to PluginManager and OperatorManager constructors instead of initPlugin() and startPlugin(). This avoids passing it to RestAPI.

Make parameters to SensorDataStore functions const where possible. Requires recompiling of binaries that depend on libdcdb!