qa: fix test 1069 config file generation
qa: fix test 1069 config file generation

echo was used when cat was needed, resulting in an empty config file.

The empty file seems to have blindly copied to here and there, no
need to start using one now when all QA assumed default configuration.
(There are also separate cases testing option priority so no loss
of coverage.)

adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp