podman network label support

Add label support for podman network create. Use the `args`
field in the cni config file to store the podman labels.
Use `podman_labels` as key name and store the labels as
map[string]string.

For reference: https://github.com/containernetworking/cni/blob/master/CONVENTIONS.md#args-in-network-config
https://github.com/containernetworking/cni/blob/spec-v0.4.0/SPEC.md#network-configuration

Example snippet:

```
...
"args": {
	"podman_labels": {
		"key1":"value1",
		"key2":"value2"
	}
}
...
```

Make podman network list support several filters. Supported filters are name,
plugin, driver and label. Filters with different keys work exclusive. Several label
filters work exclusive and the other filter keys are working inclusive.

Also adjust the compat api to support labels in network create and list.

Breaking changes:

- podman network ls -f shortform is used for --filter instead --format
This matches docker and other podman commands (container ps, volume ps)

- libpod network list endpoint filter parameter is removed. Instead the
filters paramter should be used as json encoded map[string][]string.

Signed-off-by: Paul Holzinger <paul.holzinger@web.de>

1 files changed, 10 insertions, 9 deletions

diff --git a/test/apiv2/35-networks.at b/test/apiv2/35-networks.at
index ad34511c7..d9556d59f 100644
--- a/test/apiv2/35-networks.at
+++ b/test/apiv2/35-networks.at
@@ -9,8 +9,8 @@ t GET networks/non-existing-network 404 \
 t POST libpod/networks/create?name=network1 '' 200 \
 .Filename~.*/network1\\.conflist
 
-# --data '{"Subnet":{"IP":"10.10.254.0","Mask":[255,255,255,0]}}'
-t POST libpod/networks/create?name=network2 '"Subnet":{"IP":"10.10.254.0","Mask":[255,255,255,0]}' 200 \
+# --data '{"Subnet":{"IP":"10.10.254.0","Mask":[255,255,255,0]},"Labels":{"abc":"val"}}'
+t POST libpod/networks/create?name=network2 '"Subnet":{"IP":"10.10.254.0","Mask":[255,255,255,0]},"Labels":{"abc":"val"}' 200 \
 .Filename~.*/network2\\.conflist
 
 # test for empty mask
@@ -22,7 +22,8 @@ t POST libpod/networks/create '"Subnet":{"IP":"10.10.1.0","Mask":[0,255,255,0]}'
 
 # network list
 t GET libpod/networks/json 200
-t GET libpod/networks/json?filter=name=network1 200 \
+# filters={"name":["network1"]}
+t GET libpod/networks/json?filters=%7B%22name%22%3A%5B%22network1%22%5D%7D 200 \
 length=1 \
 .[0].Name=network1
 t GET networks 200
@@ -34,12 +35,12 @@ length=2
 #filters={"name":["network"]}
 t GET networks?filters=%7B%22name%22%3A%5B%22network%22%5D%7D 200 \
 length=2
-# invalid filter filters={"label":"abc"}
-t GET networks?filters=%7B%22label%22%3A%5B%22abc%22%5D%7D 500 \
-.cause="only the name filter for listing networks is implemented"
-# invalid filter filters={"label":"abc","name":["network"]}
-t GET networks?filters=%7B%22label%22%3A%22abc%22%2C%22name%22%3A%5B%22network%22%5D%7D 500 \
-.cause="only the name filter for listing networks is implemented"
+# filters={"label":["abc"]}
+t GET networks?filters=%7B%22label%22%3A%5B%22abc%22%5D%7D 200 \
+length=1
+# invalid filter filters={"id":["abc"]}
+t GET networks?filters=%7B%22id%22%3A%5B%22abc%22%5D%7D 500 \
+.cause='invalid filter "id"'
 
 # clean the network
 t DELETE libpod/networks/network1 200 \