fix(cli): Group SubmitProposal CLI not working properly (#11521)

## Description

Closes: #11510

Add json struct tags in order to parse correctly the json.

---

### 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
- [ ] 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
- [ ] 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)
- [ ] 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
- [ ] 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)

crypto/keyring/keyring.go

@@ -482,11 +482,11 @@ func (ks keystore) Delete(uid string) error {
 func (ks keystore) KeyByAddress(address sdk.Address) (*Record, error) {
 	ik, err := ks.db.Get(addrHexKeyAsString(address))
 	if err != nil {
-		return nil, wrapKeyNotFound(err, fmt.Sprint("key with address ", address.String(), "not found"))
+		return nil, wrapKeyNotFound(err, fmt.Sprintf("key with address %s not found", address.String()))
 	}
 
 	if len(ik.Data) == 0 {
-		return nil, wrapKeyNotFound(err, fmt.Sprint("key with address ", address.String(), "not found"))
+		return nil, wrapKeyNotFound(err, fmt.Sprintf("key with address %s not found", address.String()))
 	}
 
 	return ks.Key(string(ik.Data))

x/group/client/cli/tx.go

@@ -580,7 +580,7 @@ Example:
 }`, version.AppName),
 		Args: cobra.ExactArgs(1),
 		RunE: func(cmd *cobra.Command, args []string) error {
-			prop, err := parseCLIProposal(args[0])
+			prop, err := getCLIProposal(args[0])
 			if err != nil {
 				return err
 			}

x/group/client/cli/util.go

@@ -42,23 +42,25 @@ func execFromString(execStr string) group.Exec {
 
 // CLIProposal defines a Msg-based group proposal for CLI purposes.
 type CLIProposal struct {
-	GroupPolicyAddress string
+	GroupPolicyAddress string `json:"group_policy_address"`
 	// Messages defines an array of sdk.Msgs proto-JSON-encoded as Anys.
-	Messages  []json.RawMessage
-	Metadata  string
-	Proposers []string
+	Messages  []json.RawMessage `json:"messages"`
+	Metadata  string            `json:"metadata"`
+	Proposers []string          `json:"proposers"`
 }
 
-func parseCLIProposal(path string) (CLIProposal, error) {
-	var p CLIProposal
-
+func getCLIProposal(path string) (CLIProposal, error) {
 	contents, err := os.ReadFile(path)
 	if err != nil {
 		return CLIProposal{}, err
 	}
 
-	err = json.Unmarshal(contents, &p)
-	if err != nil {
+	return parseCLIProposal(contents)
+}
+
+func parseCLIProposal(contents []byte) (CLIProposal, error) {
+	var p CLIProposal
+	if err := json.Unmarshal(contents, &p); err != nil {
 		return CLIProposal{}, err
 	}
 

x/group/client/cli/util_test.go

@@ -0,0 +1,30 @@
+package cli
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func Test_ParseCLIProposal(t *testing.T) {
+	data := []byte(`{
+			"group_policy_address": "cosmos15r295x4994egvckteam9skazy9kvfvzpak4naf",
+			"messages": [
+			  {
+				"@type": "/cosmos.bank.v1beta1.MsgSend",
+				"from_address": "cosmos15r295x4994egvckteam9skazy9kvfvzpak4naf",
+				"to_address": "cosmos15r295x4994egvckteam9skazy9kvfvzpak4naf",
+				"amount":[{"denom": "stake","amount": "10"}]
+			  }
+			],
+			"metadata": "4pIMOgIGx1vZGU=",
+			"proposers": ["cosmos15r295x4994egvckteam9skazy9kvfvzpak4naf"]
+		}`)
+
+	result, err := parseCLIProposal(data)
+	require.NoError(t, err)
+	require.Equal(t, result.GroupPolicyAddress, "cosmos15r295x4994egvckteam9skazy9kvfvzpak4naf")
+	require.NotEmpty(t, result.Metadata)
+	require.Equal(t, result.Metadata, "4pIMOgIGx1vZGU=")
+	require.Equal(t, result.Proposers, []string{"cosmos15r295x4994egvckteam9skazy9kvfvzpak4naf"})
+}