[qa] Fix bug in compactblocks Wait for specific block announcement in p2p-compactblocks The error looked like:  | Assertion failed: Failed  | File ".../bitcoin/qa/rpc-tests/test_framework/test_framework.py", line 145, in main  |   self.run_test()  | File ".../bitcoin/build/../qa/rpc-tests/p2p-compactblocks.py", line 787, in run_test  | File ".../bitcoin/build/../qa/rpc-tests/p2p-compactblocks.py", line 201, in test_sendcmpct
[qa] Fix bug in compactblocks
Wait for specific block announcement in p2p-compactblocks
The error looked like:
 | Assertion failed: Failed
 | File ".../bitcoin/qa/rpc-tests/test_framework/test_framework.py", line 145, in main
 |   self.run_test()
 | File ".../bitcoin/build/../qa/rpc-tests/p2p-compactblocks.py", line 787, in run_test
 | File ".../bitcoin/build/../qa/rpc-tests/p2p-compactblocks.py", line 201, in test_sendcmpct

Clear test_node.last_block before requesting blocks

experiencecoin/experiencecoin,experiencecoin/experiencecoin,reorder/viacoin,reorder/viacoin,experiencecoin/experiencecoin,reorder/viacoin,experiencecoin/experiencecoin,reorder/viacoin,experiencecoin/experiencecoin,reorder/viacoin,experiencecoin/experiencecoin,reorder/viacoin