RFR (T) 8248235 appcds/jigsaw/PatchModule/Simple.java failed when running in dynamic CDS mode

[Ioi Lam]

https://bugs.openjdk.java.net/browse/JDK-8248235
http://cr.openjdk.java.net/~iklam/jdk16/8248235-PatchModule-Simple-dynamic-mode.v01/

Summary:

In JDK-8246546 I added a new block of code to the Simple.java test 
that's not
compatible with CDSTestUtils.DYNAMIC_DUMP mode.

The fix is to skip this block when DYNAMIC_DUMP is enabled.

Thanks
- Ioi