Allow rpcallowip field to be configurable

[Leibniz137]

- 0.23 was recently released

• i have found it useful to allow connections from my local LAN when my dappnode-wifi or vpn isn't working reliably. The env var was already set up for use in the entrypoint script, it just needed to be exposed in the UI

[dapplion]

CC @tropicar

[tropicar]

As @alexpeterson91 said, if we want to implement this feature, you should create an issue explaining why we would have to add these options to the package. We need that information in order to decide if it is a good idea to do it in a package by default that everybody will use. Thank you for the feedback!

[Leibniz137]

reverted the various version changes so it's just the single feature.

I will open an issue and reference it here. I think it's pretty reasonable change, to keep whatever you want for that value as the default, but just allow the user to change it if they want to in the config section of the package.

[alexpeterson91]

Just gotta remember to change this when we change this too when we do the docker subnet