upgrade proposal needs tx flags. (#6981)

* upgrade proposal needs tx flags

* use AddTxFlagToCmd to every proposal command

Co-authored-by: Alessio Treglia <alessio@tendermint.com>
Co-authored-by: Alexander Bezobchuk <alexanderbez@users.noreply.github.com>

x/distribution/client/cli/cli_test.go

@@ -820,6 +820,7 @@ func (s *IntegrationTestSuite) TestGetCmdSubmitProposal() {
 
 		s.Run(tc.name, func() {
 			cmd := cli.GetCmdSubmitProposal()
+			flags.AddTxFlagsToCmd(cmd)
 			_, out := testutil.ApplyMockIO(cmd)
 
 			clientCtx := val.ClientCtx.WithOutput(out)

x/distribution/client/cli/tx.go

@@ -318,7 +318,5 @@ Where proposal.json contains:
 		},
 	}
 
-	flags.AddTxFlagsToCmd(cmd)
-
 	return cmd
 }