docs: Document the default password for validator key from gaiad init

[ValarDragon]

The title. Currently its very unclear what the password for the key generated from gaiad init is. Only way I know of to get the key is to use account recovery. Preferably this could even be shown in the UI.

[7768]

Which format are you thinking and when do you need to use the validator key in those format?

gaiad tendermint show_validator show the node's pubkey in cosmosvalpub... format, which can be used for staking. So the primary use case is sufficiently covered?

[ValarDragon]

I think it speeds up testing things, since when you create a new local testnet, only the validator's key has stake.
EDIT: I am talking about for the cosmosaccaddr that gets created in gaiacli keys list, under the provided name

[zramsay]

yeah this is a UX pain point for sure.

[ValarDragon]

The password is 1234567890!

(I'm so glad its finally been found. Thanks for pointing this out @cwgoes )

[ValarDragon]

One of bez's prs took care of this :)