Improve deployment comparison when finding via chain/address

[iamacook]

Summary

Currently, we do not compare the chain ID of a deployment, as well as manually checksumming the address. This adds (and references) a new StakingRepository['getDeployments'] method which checksums the address for us, as well as updates StakingRepository['getDeployment'] to take the chainId into account when finding the deployment in question.

Changes

• Add (and use) private getDeployments method.
• Compare chainId in getDeployment.

[coveralls]

Pull Request Test Coverage Report for Build 10696464350

Details

• 0 of 9 (0.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.02%) to 46.315%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/domain/staking/staking.repository.ts	0	9	0.0%

Totals
Change from base Build 10683977332:	-0.02%
Covered Lines:	4811
Relevant Lines:	8366

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💛 - Coveralls