please, add option database port.

[gabin0801]

When setting up the kubeflow pipeline helm, it seems that the database port also needs to be set. (The database port is written as a constant.)
Due to rds security issues, db port setting is recommended.

for example(rds-s3 case),
change charts/apps/kubeflow-pipelines/rds-s3/values.yaml

rds:
  dbHost:
  mlmdDb:
s3:
  bucketName:
  minioServiceHost: s3.amazonaws.com
  minioServiceRegion:
  roleArn:

to

rds:
  dbHost:
  dbPort: ## add here
  mlmdDb:
s3:
  bucketName:
  minioServiceHost: s3.amazonaws.com
  minioServiceRegion:
  roleArn:

after then,
in charts/apps/kubeflow-pipelines/rds-s3/templates/ConfigMap/pipeline-install-config-kubeflow-ConfigMap.yaml files,

apiVersion: v1
data:
  ...
  dbHost: '{{ .Values.rds.dbHost }}'
  dbPort: '3306'

to

apiVersion: v1
data:
  ...
  dbHost: '{{ .Values.rds.dbHost }}'
  dbPort: '{{ .Values.rds.dbPort }}'

and after then,
in deployments/rds-s3/terraform/rds-s3-components/main.tf file,

module "filter_kfp_set_values" {
  source = "../../../../iaac/terraform/utils/set-values-filter"
  set_values = {
    "rds.dbHost"            = try(module.rds[0].rds_endpoint, null),
    "s3.bucketName"         = try(module.s3[0].s3_bucket_name, null),
    "s3.minioServiceRegion" = coalesce(var.minio_service_region, var.addon_context.aws_region_name)
    "rds.mlmdDb"            = var.mlmdb_name,
    "s3.minioServiceHost"   = var.minio_service_host
    "s3.roleArn"          = try(data.aws_iam_role.pipeline_irsa_iam_role[0].arn, null)
  }
}

to

module "filter_kfp_set_values" {
  source = "../../../../iaac/terraform/utils/set-values-filter"
  set_values = {
    "rds.dbHost"            = try(module.rds[0].rds_endpoint, null),
    "rds.dbPort" = try(module.rds[0].rds_port, null),  ## add here.
    "s3.bucketName"         = try(module.s3[0].s3_bucket_name, null),
    "s3.minioServiceRegion" = coalesce(var.minio_service_region, var.addon_context.aws_region_name)
    "rds.mlmdDb"            = var.mlmdb_name,
    "s3.minioServiceHost"   = var.minio_service_host
    "s3.roleArn"          = try(data.aws_iam_role.pipeline_irsa_iam_role[0].arn, null)
  }
}