Bump stemcell [#138983699]
Bump stemcell [#138983699]

Signed-off-by: Ryan Richard <619aec8bf94cdb3b9426cca2644f8e96853bc9b1@pivotal.io>
Signed-off-by: Corey Innis <c6de6a297c7ba72017894924528d266f693d3f31@pivotal.io>

pivotal-cf-experimental/ops-manager-example,pivotal-cf-experimental/ops-manager-example,pivotal-cf-experimental/ops-manager-example,pivotal-cf-experimental/ops-manager-example