GitLab

Also write output of llvm-cov export program on the disk (needed for the bot).

Plus some refactoring for logs from target programs:
- redirect stderr from targets into stdout to be written into a .log
- write logs into its own subdir for better output structure

Not output folder structure look as follows:

$ ls -l out/zreport15/
total 8
drwxr-x--- 5 mmoroz primarygroup 4096 May  4 10:53 linux
-rw-r--r-- 1 mmoroz primarygroup 2519 May  4 10:53 style.css

$ ls -l out/zreport15/linux/
total 48
drwxr-xr-x 2 mmoroz primarygroup 4096 May  4 10:53 components
-rw-r--r-- 1 mmoroz primarygroup 1627 May  4 10:53 component_view_index.html
-rw-r--r-- 1 mmoroz primarygroup 4672 May  4 10:53 coverage.profdata
-rw-r--r-- 1 mmoroz primarygroup  241 May  4 10:53 directory_view_index.html
-rw-r--r-- 1 mmoroz primarygroup 7416 May  4 10:53 file_view_index.html
-rw-r--r-- 1 mmoroz primarygroup  200 May  4 10:53 index.html
drwxr-xr-x 2 mmoroz primarygroup 4096 May  4 10:53 logs
-rw-r--r-- 1 mmoroz primarygroup 7483 May  4 10:53 summary.json
drwxr-x--- 3 mmoroz primarygroup 4096 May  4 10:53 usr


Bug: 784464, 836663
Change-Id: I3283f16b62cfeb267bb2b3092fa469d5ff39ef14
Reviewed-on: https://chromium-review.googlesource.com/1044652
Commit-Queue: Abhishek Arya <inferno@chromium.org>
Reviewed-by: Abhishek Arya <inferno@chromium.org>
Cr-Commit-Position: refs/heads/master@{#556348}