package_manager.py: Add extract() method for opkg and dpkg

Sometimes it is needed to have the content of a package outside
the recipe context.  This new method extract the content of an
IPK/DEB file to a tmpdir, without actually installing the package.

A new OpkgDpkgPM class was added to share the code for opkg and dpkg.

There were need some changes to opkg_query() in order to use it
with apt-cache output. Also set default values to avoid UnboundLocalError

[YOCTO #9569]

Signed-off-by: Mariano Lopez <mariano.lopez@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

0 files changed, 0 insertions, 0 deletions