When ListFunctions populate it's function map, it should not add
functions that GetFunction returned error.
Signed-off-by: Carlos de Paula <me@carlosedp.com>
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>
