PDB-119 Pin to RSA ciphers for all jdk's to work-around Centos 6 EC failures

We're seeing EC cipher failures for Centos 6 boxes, this patch pins the ciphers
to RSA only for all JDK's now to work-around the problem.

Signed-off-by: Ken Barber <ken@bob.sh>
Merge pull request #769 from kbarber/ticket/1.5.x/PDB-119-java-ec-cipher-issues

WIP: PDB-119 Pin to RSA ciphers for all jdk's to work-around Centos 6 EC failures