reduce install framework logging during startup

[stokpop]

The 5.0.1 Golang based JBP is rather verbose compared to the Ruby based JBP:

Installing framework: Java CF Env
   -----> Installing Java CF Env
   -----> Installing java-cfenv 3.5.0
   Copy [/tmp/buildpacks/455ea21112b123d8/dependencies/16e24c964bf89e88e7893df74dfa044d/java-cfenv-3.5.0.jar]
   Installed Java CF Env version 3.5.0

versus

-----> Downloading Java Cf Env 3.5.1 from https://java-buildpack.cloudfoundry.org/java-cfenv/java-cfenv-3.5.1.jar (found in cache)

Improve logging to one/two line per installed framework?