code-analysis: Factor out package versions into Docker build arguments, replace default-jre -> default-jre-headless

Package versions are now factored out as arguments, so that they can even be automatically updated from
iopsys/iopsyswrt by a pipeline.

default-jre has been replaced by default-jre-headless, since this image is designed to run in a container without UI,
so there's no need to pull in graphical dependencies, saving around 300 MB in compressed form:

	REPOSITORY                                                   TAG        IMAGE ID       CREATED          SIZE
	dev.iopsys.eu:5050/iopsys/gitlab-ci-pipeline/code-analysis   iop-8847   aaf075c8e753   23 minutes ago   2.25GB

	REPOSITORY             TAG       IMAGE ID       CREATED        SIZE
	iopsys/code-analysis   latest    ffaa1c3094dc   7 months ago   2.55GB

The cppcheck invocation without suppression of unmatched suppressions
expects that there would be at least one error of suppressed kind. If there
are none, cppcheck fails as well.
This patch enables ignoring errors of that kind.

Signed-off-by: Maxim Menshikov <maxim.menshikov@iopsys.eu>

Reverting until "more_test" branch is ready

This reverts commit cacd8f9e.

This feature allows to add inline check suppressions, for example

    some_unusual_code() {  // cppcheck-suppress syntaxError

This reverts commit 6c45156b.