Those files are generated by neutron post_test_hook.sh script and
contain all log messages from all functional / fullstack test cases,
merged into a single file.
This will help with capturing particular fail patterns for those jobs.
Without the patch, only console log is indexed.
Depends-On: I59c11085d1645283f329e5fb22cc2988e19e8298
Change-Id: I9ebbe249e8591b1cd84a8fa7c0314134c2898648