build: implement --label Signed-off-by: Evan Hazlett <ejhazlett@gmail.com> network: allow adding labels on create Signed-off-by: Evan Hazlett <ejhazlett@gmail.com> volume: allow adding labels on create Signed-off-by: Evan Hazlett <ejhazlett@gmail.com> add tests for build, network, volume Signed-off-by: Evan Hazlett <ejhazlett@gmail.com> vendor: libnetwork and engine-api bump Signed-off-by: Evan Hazlett <ejhazlett@gmail.com> Upstream-commit: fc214b4408d915e3510f61c7584ca01c176d1373 Component: engine