Description of problem:
Default keysize for Root CAs is 2048, but should be 4096. Roots may be very long
lived and should offer the highest strength that is known to be supported by
browsers and other toolkits.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Install the CA
2. Configure the initial root
You'll see that 2048 is the default.
Actually, let's set the default for all CAs to be 4096.