[Remail] remail/gpg: Use the lists private key for signing

[Thomas Gleixner]

Konstantin,

Konstantin Ryabitsev <konstantin at linuxfoundation.org> writes:
> On Tue, Feb 18, 2020 at 09:48:33PM +0100, Thomas Gleixner wrote:
>> Konstantin reported that outgoing mail from a mailing list is signed with
>> the default private key found in the private keyring.
>> 
>> That's caused by just handing boolen True into the sign argument of
>> gpg_encrypt() while the documentation clearly says:
>> 
>>   sign (defaults to None)
>>     Either the Boolean value True, or the fingerprint of a key which is
>>     used to sign the encrypted data. If True is specified, the default key
>>     is used for signing. When not specified, the data is not signed.
>> 
>> Hand the list account fingerprint in if signing is enabled in the
>> configuration.
>> 
>> Reported-by: Konstantin Ryabitsev <konstantin at linuxfoundation.org>
>> Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
>> ---
>> Note: Untested 
>
> Tested and confirmed working.
>
> Reviewed-by: Konstantin Ryabitsev <konstantin at linuxfoundation.org>

Thanks for doing the test runs on that. Collecting tags and commiting
the crime.

Thanks,

        Thomas