perf: add scripts to collect guest/host sysinfo

The shell scripts are prepared for RHEL OS, the bat script is prepared for
Windows guests, user can write their own scripts to collect what they want
to get. These scripts are just referenced examples.

V2: improve call function (Lukas)

Signed-off-by: Amos Kong <akong@redhat.com>
Merge pull request #1489 from kongove/logscripts

perf: add scripts to collect guest/host sysinfo