testsuite has many failures when run as root

See the description of many testsuite failures in Issue 12.
Running as root disables PDSH_MODULE_DIR use, which is required
for some of the module loading tests and most of the pdcp tests.
Also, if some portion of the build directory is owned by a different
user, pdsh will fail to load *any* modules due to paranoia about the
security of the path.

Though it isn't strictly necessary for the testsuite to run as root,
the tests that are failing now should instead be gracefully skipped
so as not to appear that the tests are mysteriously failing.

Original issue reported on code.google.com by mark.gro...@gmail.com on 8 Mar 2011 at 2:47

bradybd / pdsh

testsuite has many failures when run as root #13