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## Description
Closes: #9499
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---
### Author Checklist
*All items are required. Please add a note to the item if the item is not applicable and
please add links to any relevant follow up issues.*
I have...
- [x] included the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
- [x] added `!` to the type prefix if API or client breaking change
- [x] targeted the correct branch (see [PR Targeting](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#pr-targeting))
- [x] provided a link to the relevant issue or specification
- [x] followed the guidelines for [building modules](https://github.com/cosmos/cosmos-sdk/blob/master/docs/building-modules)
- [ ] included the necessary unit and integration [tests](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#testing)
- [x] added a changelog entry to `CHANGELOG.md`
- [ ] included comments for [documenting Go code](https://blog.golang.org/godoc)
- [ ] updated the relevant documentation or specification
- [x] reviewed "Files changed" and left comments if necessary
- [x] confirmed all CI checks have passed
### Reviewers Checklist
*All items are required. Please add a note if the item is not applicable and please add
your handle next to the items reviewed if you only reviewed selected items.*
I have...
- [ ] confirmed the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
- [ ] confirmed `!` in the type prefix if API or client breaking change
- [ ] confirmed all author checklist items have been addressed
- [ ] reviewed state machine logic
- [ ] reviewed API design and naming
- [ ] reviewed documentation is accurate
- [ ] reviewed tests and test coverage
- [ ] manually tested (if applicable)
* return empty list instead of rpc error when no records found for staking delegations
* fix grpc query DelegatorDelegations tests
* remove response code tests for staking delegations
* fix failing tests
* change staking delegations response code to 200 in grpc test
* add staking delegations response code tests to TestQueryDelegatorDelegationsGRPC
* add address without delegations testcase
* add changes to grpc query tests of delegatorDelegations
* remove getRequest unused function from x/staking/client/rest/grpc_query_test.go
* minor fixes
* add testcases for request with no delegations
* address review comments
* add changelog
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>
* update staking specs
* use gosimple code in x/staking/client/testutil/suite.go
* small fixes
* add godoc to methods in msg_server and grpc_query
* changes to godoc and small fixes
* remove unnecessary lines
* remove mentions of serviceMsg and avoid having slash after Msg
* Rename proto Req to Pagination
* Change Res to Pagination
Co-authored-by: Alexander Bezobchuk <alexanderbez@users.noreply.github.com>
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>