latest release of ya-sb-router seems broken deb

[tworec]

The latest release of ya-sb-router seems to include a broken deb package, goth tests are failing on building their yagna docker image with the following error:
dpkg: error processing archive /ya-sb-router_v0.4.6_amd64.deb (--unpack): conffile name 'etc/ya-sb-router.conf' is not an absolute pathname

Reported by @zakaprov

[kmazurek]

This is related to a change introduced in dpkg version 1.20.1 which changes how "relative" paths in deb packages are treated.
This change is reflected in cargo deb with this PR mmstick/cargo-deb#173, however there's no release which includes it yet.

I'd suggest we update cargo deb in this repo once it's possible and do a patch release. For the time being I can pin the Docker images we use in goth to an earlier version of Debian, so that they use dpkg version 1.19.x.

[kmazurek]

This has been resolved in ya-service-bus 0.4.7 release. Also, the version of the debian image used in goth tests has been pinned to a specific SHA (golemfactory/goth#507) to prevent potential breaking updates in the future.

[tworec]

@prekucki thx a lot for a speedy fix.
@zakaprov muchas gracias for verification and closing