Protocols used in allowed_cidr_blocks don't include SASL/SCRAM public cluster

[lplazas]

Describe the Bug

When using the module, if you specify a list of allowed_cidr_blocks, a security group is created and a rule is added for each combination of cidr block and every one of the protocols defined here:

terraform-aws-msk-apache-kafka-cluster/main.tf

Line 15 in 1b0169e

protocols = {

The list does not contain 9196, which is the port used with SASL/SCRAM when having a publicly accessible cluster. Attached is an example image.

Expected Behavior

Access to 9196 should also be whitelisted for the cidr_blocks specified.

Steps to Reproduce

Create a cluster and then make it publicly accessible by satisfying first the requirements listed here: https://docs.aws.amazon.com/msk/latest/developerguide/public-access.html

Screenshots

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Environment

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Additional Context

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