RFR: 8159180 Remove default setting for jdk.security.provider.preferred

[Anthony Scarpino]

Hi,

I need a review of this simple change to to undo the default settings 
for the jdk.security.provider.preferred.  The only code changes are test 
related.  The test now sets the property to test the previous default 
functionality.

http://cr.openjdk.java.net/~ascarpino/8159180/webrev/

thanks

Tony