hg: jdk/jdk15: 8247418: Only validate the certificates trust if using the default key user name.

[andy.herrick at oracle.com]

Changeset: 1c50e1d77d85
Author:    herrick
Date:      2020-06-12 11:24 -0400
URL:       https://hg.openjdk.java.net/jdk/jdk15/rev/1c50e1d77d85

8247418: Only validate the certificates trust if using the default key user name.
Reviewed-by: asemenyuk, almatvee

! test/jdk/tools/jpackage/macosx/base/SigningCheck.java