execute other non-zfs tests contained in "usr/src/test"

[prakashsurya]

Before we can use this automation for posting test results for illumos commits, we need to run all of the tests found in "usr/src/test", not only the zfs-specific tests. It shouldn't hurt to always run the non-zfs tests, even for zfs-specific changes, assuming these other tests aren't flakey.

This issue will track the addition of these other tests to the automation.