Upgrade module tx commands not set

[RiccardoM]

Summary of Bug

The x/upgrade module does not have its tx commands initialized properly.

Version

7cd0cab

Steps to Reproduce

Try running any of the x/upgrade module CLI commands related to the transactions:

• tx upgrade software-upgrade
• tx upgrade cancel-software-upgrade

Fix

The fix should be pretty easy to implement and consists in registering them inside the x/upgrade module module.go file:

// GetTxCmd returns the transaction commands for this module
func (AppModuleBasic) GetTxCmd(ctx context.CLIContext) *cobra.Command {
  txCmd := &cobra.Command{
    Use:   "upgrade",
    Short: "Upgrade transaction subcommands",
    }
  txCmd.AddCommand(flags.PostCommands(
    cli.NewCmdSubmitUpgradeProposal(ctx),
    cli.NewCmdSubmitCancelUpgradeProposal(ctx),
  )...)
  return txCmd
}

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