No user of GetNetworkDriverList needs to access the map by key.
The only user of GetNetworkDriverList is in docker info and with a map
the network list is always flipping because loop is not deterministic.
Fix this by returning a string slice which instead is.
Signed-off-by: Antonio Murdaca <runcom@redhat.com>
Upstream-commit: 7ca635a1ec2962358a5f7d3c021faca83ff5e55f
Component: engine