Fixes the problem that inbound base fee and fee rate are overwritten
with 0 if they are not specified in PolicyUpdateRequest. This ensures
backward compatibility with older rpc clients that do not yet support
the inbound feature.
The new script perfoms the following checks on the sample-lnd.conf file:
1. Checks that all relevant options of lnd are included.
2. Verifies that defaults are labeled if there are also further examples.
3. Checks that all default values of lnd --help are mentioned correctly,
including empty defaults and booleans which are set to false by
default.
If there is only one entry in the sample-lnd.conf, it must reflect the
default value. If additional examples are provided, they should follow
the following format.
; Default:
; option=defaultvalue
; Example
; option=examplevalue
Booleans have been changed to 'false' to align with the default behavior
of Go. Additionally, the description for various parameters has been
adjusted.