New output flag missing for governance commands

[gitmachtl]

Hey @newhoggy ,

checked out latest master and saw that the new output flags
--key-output-bech32
--key-output-text-envelope
are missing for the
cardano-cli <era> governance drep key-gen
cardano-cli <era> governance committee key-gen-cold
cardano-cli <era> governance committee key-gen-hot
commands