* check the proper field for dpkg installation state fixes#2006
Signed-off-by: Mathieu Sauve-Frankel <msf@kisoku.net>
* Properly handle held packages on dpkg-flavored OS
InSpec was looking at the wrong field in `dpkg -s` output to determine
whether a package was installed or not. An installed, held package was
incorrectly reported as uninstalled.
This adds the proper unit tests and also adds a `be_held` matcher.
Thanks to @kisoku for the initial work in #2007.
Signed-off-by: Adam Leff <adam@leff.co>
