Set doppler port back to its default of 8081
Set doppler port back to its default of 8081

- The restriction of using port 4443 on AWS may not apply to internal
endpoints

[#140440359]

Signed-off-by: Chunyi Lyu <0f8e751eae2b6087fa04691c2ff75f586389adcc@pivotal.io>

cloudfoundry/cf-deployment,cloudfoundry/cf-deployment,emalm/cf-deployment