RFR[15] 8245665: Test WeakAlg.java should only make sure no warning for weak signature algorithms by keytool on root CA

[Hai-May Chao]

Hi,

I’d like to request q review for -

JBS: https://bugs.openjdk.java.net/browse/JDK-8245665
Webrev: https://cr.openjdk.java.net/~hchao/8245665/webrev.00/

Keytool only emits warnings for the root CA in cacerts using the weak key, but 
not for using the weak algorithm. So test case WeakAlg.java should do the 
checking on warnings accordingly.

Thanks,
Hai-May