The use of containerd and CNI functions has been refactored to reuse
the same codebase.
Added all network functionality to own directory and package. Removed
netlink and weave library in favor of using CNI plugin result files.
Rename containers handler to functions to clear-up functionality.
Signed-off-by: Carlos de Paula <me@carlosedp.com>
Replaced netns utility with CNI plugins to create a bridge network
and allow communication between containers with firewall plugin.
Overwrite the CNI config in case it exists. Allow updating the config
on new versions.
Signed-off-by: Carlos de Paula <me@carlosedp.com>
