python: Fix test.
python: Fix test.

* lang/python/tests/t-quick-key-manipulation.py: Modify the
configuration file in the ephemeral home directory, not the one used
by all the tests.

Fixes-commit: 15fbac9e72a4d1bff9a3b9e9822f9175b09fbcd5
Signed-off-by: Justus Winter <4d1bd7a5ca1cd26bee0df05b6801a6ce9a22196e@g10code.com>

gpg/gpgme,gpg/gpgme,gpg/gpgme,gpg/gpgme,gpg/gpgme,gpg/gpgme,gpg/gpgme