Add blobs in support of Java buildpack

These blobs will enable the Java buildpack to run ok when there is
no internet connection.
Merge pull request #156 from glyn/master

Add blobs in support of Java buildpack
update defaults for uaa autoapprove/cf clients

also configure cf client to by default expire access tokens after 5
minutes, and refresh tokens after 30 days

[finishes #54728202]
Copy buildpack cache recursively