Added support for specifying multiple loadbalancer IPs #129
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What this PR does / why we need it?
Currently, we can only specify a single load balancer IP. In some cases, users may need to define multiple load balancer IPs, this PR updates the configuration to support that
Changes
loadbalancer_ipvariable type from string to a list, so users can now provide multiple IPs instead of just oneipaddresspool.yamlandl2advertisement.yamlmanifests to allow users to modify them for custom configurations if needed (https://metallb.universe.tf/configuration/_advanced_ipaddresspool_configuration/)