8014857: Enable ergonomic VM selection in arm/jvm.cfg

Reviewed-by: darcy

src/solaris/bin/arm/jvm.cfg

@@ -30,6 +30,6 @@
 # "-XXaltjvm=<jvm_dir>" option, but that too is unsupported
 # and may not be available in a future release.
 #
--client KNOWN
+-client IF_SERVER_CLASS -server
 -server KNOWN
 -minimal KNOWN