Add basic cinder data to the plugin

Pull in /etc/cinder, cinder version and logs for cinder.
Remove obsolete command from selinux plugin

The selinuxconfig command has not been shipped for years and does
not exist on modern SELinux using distributions.
Make PATH policy controlled

Make the PATH environment variable subject to Policy class
control. Policies may set PATH to an appropriately formatted
string for the platform. This will be exported to the environment
and used as the search path for binaries that sos modules execute.

Following this change all absolute paths can be removed from
plug-in code simplifying maintenance on multiple distributions
and distribution versions (e.g. Red Hat UsrMove and various
updates that relocate binaries such as lsusb).

Signed-off-by: Bryn M. Reeves <bmr@redhat.com>
Remove absolute paths from plug-ins

Now that policies have control of PATH there is no need for
plug-ins to try to guess the correct absolute path (or work
around cases where it is known to have changed).

Signed-off-by: Bryn M. Reeves <bmr@redhat.com>
Merge pull request #118 from battlemidget/unittest-fixes-1

Fix unittests and more pep8 conforming
Merge pull request #108 from ivoks/patch-1

Add basic cinder data to the plugin