Refer to log_cache_ca the right way
Refer to log_cache_ca the right way

[#167113944](https://www.pivotaltracker.com/story/show/167113944)

Co-authored-by: Andrew Chang <8623e6fbc297352b6499224fce9f0e2e17f58e28@pivotal.io>
Co-authored-by: Weyman Fung <4ab5e17be5c5cdce6cf54d6174afda06421ccec1@pivotal.io>

cloudfoundry/cf-deployment,cloudfoundry/cf-deployment