[FEATURE REQUEST] Add load balancer support in cassandra_cql module

[doesitblend]

Is your feature request related to a problem? Please describe.
After upgrading to the latest Cassandra driver (currently 3.24 for use with the cassandra_cql module

[WARNING ] Cluster.__init__ called with contact_points specified, but no load_balancing_policy. In the next major version, this will raise an error; please specify a load-balancing policy. (contact_points = ['169.xxx.xxx.xxx', '169.xxx.xxx.xxx', '169.xxx.xxx.xxx', '169.xxx.xxx.xxx', '169.xxx.xxx.xxx', '169.xxx.xxx.xxx'], lbp = None)

Describe the solution you'd like
Add option to the module to allow the missing configuration to be passed through.

Please Note
If this feature request would be considered a substantial change or addition, this should go through a SEP process here https://github.com/saltstack/salt-enhancement-proposals, instead of a feature request.