fix: use sdk.config hdpath (backport cosmos#10414) (cosmos#10445)

* fix: use sdk.config hdpath (cosmos#10414)

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## Description

Other cosmos-sdk based chains cannot reset hdpath on running `app testnet` command.

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---

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- [ ] included the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
- [ ] added `!` to the type prefix if API or client breaking change
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- [ ] included the necessary unit and integration [tests](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#testing)
- [ ] added a changelog entry to `CHANGELOG.md`
- [ ] included comments for [documenting Go code](https://blog.golang.org/godoc)
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- [ ] 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
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- [ ] manually tested (if applicable)

(cherry picked from commit 33737f4)

# Conflicts:
#	CHANGELOG.md
#	server/init.go

* Fix conflicts

Co-authored-by: NevermoreRandom <[email protected]>
Co-authored-by: Amaury M <[email protected]>

CHANGELOG.md

@@ -38,6 +38,10 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ## [Unreleased]
 
+### Bug Fixes
+
+* [\#10414](https://github.com/cosmos/cosmos-sdk/pull/10414) Use `sdk.GetConfig().GetFullBIP44Path()` instead `sdk.FullFundraiserPath` to generate key
+
 ## [v0.44.3](https://github.com/cosmos/cosmos-sdk/releases/tag/v0.44.3) - 2021-10-21
 
 ### Improvements