This enables us to pass a map of CAs to deploy the CA certificates
using puppet and hiera instead of the bash script we were using. It
also gives us the feature that we will be able to deploy several CA
certificates on the nodes instead of just one as was the case before.
Change-Id: I9559487874b80aeb093cc2fa2cfa7c0479d5a8b2
Depends-On: I84273b4cd6576a63fa78dc93ad6b077dd2a780c7