[CHIA-1069] Use smarter coin selection algorithm for DAO wallet select_coins_for_asset_type

[Quexington]

This coin selection algorithm is pretty much the simplest it can be. This PR changes the function to use the canonical knapsack algorithm that all other coin selection endpoints use.

[coveralls-official]

Pull Request Test Coverage Report for Build 10814044987

Details

• 7 of 7 (100.0%) changed or added relevant lines in 1 file are covered.
• 13 unchanged lines in 4 files lost coverage.
• Overall coverage increased (+0.06%) to 90.928%

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Files with Coverage Reduction	New Missed Lines	%
chia/full_node/full_node_api.py	1	82.28%
chia/rpc/rpc_server.py	1	88.16%
chia/data_layer/data_layer.py	2	85.8%
chia/full_node/full_node.py	9	86.37%

Totals
Change from base Build 10812245243:	0.06%
Covered Lines:	101698
Relevant Lines:	111811

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💛 - Coveralls

[markelrod]

coverage exception ok