more start_* service starting consistency

[altendky]

Purpose:

way back i had worked to make these files more common towards the end of maybe being able to deduplicate them. this is just a tidy back in that direction. i happened to pick the farmer as 'reference' and then diffed it against each of the others and tweaked until the common parts were coded the same way.

Current Behavior:

New Behavior:

Testing Notes:

Draft For:

• test more services terminate #18807

[coveralls-official]

Pull Request Test Coverage Report for Build 11672066746

Details

• 59 of 60 (98.33%) changed or added relevant lines in 7 files are covered.
• 11 unchanged lines in 5 files lost coverage.
• Overall coverage increased (+0.03%) to 90.93%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
chia/server/start_data_layer.py	9	10	90.0%

Files with Coverage Reduction	New Missed Lines	%
chia/_tests/simulation/test_simulation.py	1	96.45%
chia/daemon/client.py	1	74.1%
chia/rpc/rpc_server.py	1	87.67%
chia/server/node_discovery.py	2	80.92%
chia/full_node/full_node.py	6	85.86%

Totals
Change from base Build 11671381623:	0.03%
Covered Lines:	102819
Relevant Lines:	112843

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💛 - Coveralls