hg: jdk/sandbox: 8247907: XMLDsig logging does not work

[chris.hegarty at oracle.com]

Changeset: 216c6baa0564
Author:    weijun
Date:      2020-06-20 15:11 +0800
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/216c6baa0564

8247907: XMLDsig logging does not work
Reviewed-by: mullan

! src/java.base/share/lib/security/default.policy
! src/java.xml.crypto/share/classes/com/sun/org/slf4j/internal/Logger.java
+ test/jdk/javax/xml/crypto/dsig/LogParameters.java