Update to 0.1.6

Update to 0.1.6.  Resolved the following issues:

* https://github.com/eucalyptus/eucalyptus-sosreport-plugins/issues/49
* https://github.com/eucalyptus/eucalyptus-sosreport-plugins/issues/51
* https://github.com/eucalyptus/eucalyptus-sosreport-plugins/issues/53
* https://github.com/eucalyptus/eucalyptus-sosreport-plugins/issues/54
* https://github.com/eucalyptus/eucalyptus-sosreport-plugins/issues/56