Fix cloudformation health check to work with concourse ELB / web instance
Fix cloudformation health check to work with concourse ELB / web instance

[#99220258]

SrinivasChilveri/lattice,Klaudit/lattice,davidwadden/lattice-release,SrinivasChilveri/lattice,Klaudit/lattice,svrc-pivotal/lattice,Klaudit/lattice,cloudfoundry-incubator/ltc,cloudfoundry-incubator/ltc,datachand/lattice,felipeg48/lattice,svrc-pivotal/lattice,davidwadden/lattice,SrinivasChilveri/lattice,svrc-pivotal/lattice,datachand/lattice,felipeg48/lattice,davidwadden/lattice-release,SrinivasChilveri/lattice,Klaudit/lattice,datachand/lattice,datachand/lattice,davidwadden/lattice,svrc-pivotal/lattice