* Fix packaging regression on Windows
Component variables should be set only for Linux and macOS,
otherwise on Windows the internal WiX IDs change and the
WiX fragment patch won't work.
Cleanup the version patch component, since WiX doesn't support
version components that are not digits.
* Add the rpm package to the CI Dockerfile, to test rpm packaging
* Fix TGZ generation on other platforms
* Add dpkg-dev and file packages to the CI Dockerfile
They are needed for creating DEB debug packages.
* Add a packaging steps to the CI
Set TGZ as a default packaging system when one cannot detected.
Fix generatePackageTarget indentation.
Since normally the tests are run on a more complete VM or physical host,
we create fake empty packages to install so that
the test DebPackages.test_sanity doesn't fail.
