JDR Subsystem destroys password related system properties

When you export a JDR, it provides a report of system properties, but to avoid leaking passwords, it redacts any system property with the string <Redacted> - see here:

https://github.com/wildfly/wildfly/blob/master/jdr/jboss-as-jdr/src/main/java/org/jboss/as/jdr/commands/SystemProperties.java#L51-L53

One major problem is it never flips the system properties back to their original values! So once a JDR report is created, no code in the JVM can ever be able to use those password system properties again - because the password is now changed to the string "<Redacted>".

To fix, once that "system-properties.txt" file is created, you have to System.setProperty() those password properties back to their original values.