Before this change, only *.log and *.log.[0-9] patterns were
ignored, which was not enough. Examples of file names which were
not ignored:
devstack.log.2018-08-09-100547
wget-log
wget-log.1
Patterns *.log.* and *-log.* work for every log file generated by
devstack.
Change-Id: I6f0de5de74f196ab9df66cf3f2f969e53da01c22
Signed-off-by: Michal Rostecki <mrostecki@suse.de>