If one CodeChecker store fails, the entire running fails, instead of skipping

[whisperity]

When running the analyses, it is possible that CodeChecker store commands will fail if the size of /tmp (where the server does temporary unpacking of the stored run data) is limited compared to the size of the stored result set (i.e. only 4 GiB instead of the 14 GiB needed). In this case, the run will not appear on the server.

However, the post_process step (after running every configuration for the project) would like to query the run data. In this case, for the failed-to-store run, an empty JSON is returned, which does not have the resultCount key. This exception escapes and tears down the entire analysis, which means that subsequent projects are immediately left unanalysed.