Don't call sudo when using stemcell-copy script
Don't call sudo when using stemcell-copy script

The previous commit moves the `sudo` inside of the stemcell-copy script,
we simply missed this unit test assertion.

[#177401654] Add heavy stemcell support to Ops Manager AWS

Signed-off-by: Brian Cunnie <c96b911daecac34294af5ecfb5cb3aa7cd7901af@vmware.com>

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