Rename aws_alb resource to aws_lb
Rename aws_alb resource to aws_lb

Co-authored-by: Belinda Liu <496afffef642eb3807bf00ef2898c80e8c6b937c@pivotal.io>

cloudfoundry-incubator/bosh-aws-cpi-release,cloudfoundry-incubator/bosh-aws-cpi-release,cloudfoundry-incubator/bosh-aws-cpi-release