add wallet coverage

[coveralls]

Pull Request Test Coverage Report for Build 628918862

• 53 of 81 (65.43%) changed or added relevant lines in 25 files are covered.
• 5 unchanged lines in 3 files lost coverage.
• Overall coverage increased (+2.2%) to 60.306%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
moneysocket/layer/consumer/consumer.go	1	2	50.0%
moneysocket/layer/provider/provider.go	0	1	0.0%
moneysocket/layer/provider/provider_transact.go	0	1	0.0%
moneysocket/layer/transact/consumer.go	0	2	0.0%
moneysocket/nexus/seller/seller.go	0	2	0.0%
moneysocket/nexus/transact/consumer.go	0	2	0.0%
moneysocket/layer/seller/layer.go	0	3	0.0%
moneysocket/nexus/consumer/consumer.go	0	3	0.0%
moneysocket/nexus/provider/provider_transact.go	0	6	0.0%
moneysocket/nexus/provider/provider.go	0	7	0.0%
<!--	Total:	53	81	65.43%	-->

Files with Coverage Reduction	New Missed Lines	%
moneysocket/nexus/provider/provider_transact.go	1	0%
moneysocket/nexus/websocket/incoming.go	1	63.04%
terminus/server.go	3	67.81%
<!--	Total:	5		-->

Totals
Change from base Build 628876375:	2.2%
Covered Lines:	2724
Relevant Lines:	4517

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💛 - Coveralls