Warn on invalid lines in HTTP user files
Warn on invalid lines in HTTP user files

Without this change, invalid lines or values would be silently ignored.

Signed-off-by: Michael Hanselmann <68b67885ff74281219b4a4be33cc20fd45078d7c@google.com>
Reviewed-by: Guido Trotter <f62ca4d5358bdaeef0e50e57f9f7e231de63727e@google.com>

onponomarev/ganeti,dimara/ganeti,mbakke/ganeti,ganeti/ganeti,apyrgio/snf-ganeti,yiannist/ganeti,leshchevds/ganeti,mbakke/ganeti,andir/ganeti,ganeti-github-testing/ganeti-test-1,apyrgio/ganeti,grnet/snf-ganeti,leshchevds/ganeti,mbakke/ganeti,apyrgio/snf-ganeti,ganeti/ganeti,andir/ganeti,grnet/snf-ganeti,bitemyapp/ganeti,ganeti-github-testing/ganeti-test-1,onponomarev/ganeti,dimara/ganeti,ganeti/ganeti,leshchevds/ganeti,andir/ganeti,apyrgio/ganeti,yiannist/ganeti,yiannist/ganeti,bitemyapp/ganeti