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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- [ ] included the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
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- [ ] added a changelog entry to `CHANGELOG.md`
- [ ] included comments for [documenting Go code](https://blog.golang.org/godoc)
- [ ] updated the relevant documentation or specification
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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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CHANGELOG.md

@@ -138,6 +138,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ### Bug Fixes
 
+* [\#10414](https://github.com/cosmos/cosmos-sdk/pull/10414) Use `sdk.GetConfig().GetFullBIP44Path()` instead `sdk.FullFundraiserPath` to generate key
 * (rosetta) [\#10340](https://github.com/cosmos/cosmos-sdk/pull/10340) Use `GenesisChunked(ctx)` instead `Genesis(ctx)` to get genesis block height
 * (client) [#10226](https://github.com/cosmos/cosmos-sdk/pull/10226) Fix --home flag parsing. 
 * [#10180](https://github.com/cosmos/cosmos-sdk/issues/10180) Documentation: make references to Cosmos SDK consistent

server/init.go

@@ -12,7 +12,7 @@ import (
 // phrase to recover the private key.
 func GenerateCoinKey(algo keyring.SignatureAlgo, cdc codec.Codec) (sdk.AccAddress, string, error) {
 	// generate a private key, with recovery phrase
-	k, secret, err := keyring.NewInMemory(cdc).NewMnemonic("name", keyring.English, sdk.FullFundraiserPath, keyring.DefaultBIP39Passphrase, algo)
+	k, secret, err := keyring.NewInMemory(cdc).NewMnemonic("name", keyring.English, sdk.GetConfig().GetFullBIP44Path(), keyring.DefaultBIP39Passphrase, algo)
 	if err != nil {
 		return sdk.AccAddress([]byte{}), "", err
 	}
@@ -47,7 +47,7 @@ func GenerateSaveCoinKey(keybase keyring.Keyring, keyName string, overwrite bool
 		}
 	}
 
-	k, secret, err := keybase.NewMnemonic(keyName, keyring.English, sdk.FullFundraiserPath, keyring.DefaultBIP39Passphrase, algo)
+	k, secret, err := keybase.NewMnemonic(keyName, keyring.English, sdk.GetConfig().GetFullBIP44Path(), keyring.DefaultBIP39Passphrase, algo)
 	if err != nil {
 		return sdk.AccAddress([]byte{}), "", err
 	}