Upload logs from separate hosts

[bestchai]

In some cases it could be convenient to upload the logs from different hosts as separate log files (separated by delimiters much like multiple executions are currently allowed), instead of parsing the host from the log lines.

[Issue created by raboofje: 2018-01-08] [Last updated on bitbucket: 2018-02-24]

[Comment created by bestchai: 2018-02-24] Hi Arnout, thanks for the great suggestion. The project is quiet at the moment without any active development; once I find a student to help out with some of the issues, we'll try to make this happen.