r21590: add RPC-HANDLES-MIXED-SHARED test, which shows that

r21590: add RPC-HANDLES-MIXED-SHARED test, which shows that
assoc_groups are shared between idl-interfaces and connections.

But you can't close a samr policy handle on a lsa pipe.

add RPC-HANDLES-RANDOM-ASSOC test, which shows that
you can't bind with an invalid assoc_group_id

metze
(This used to be commit 26b0e03a776fbac4e93fef585dcfec5962f40387)