Support annotations from containers.conf

Currently podman does not use the annotations specified in the
containers.conf. This PR fixes this.

Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>

pkg/specgen/generate/container.go

@@ -3,6 +3,7 @@ package generate
 import (
 	"context"
 	"os"
+	"strings"
 
 	"github.com/containers/image/v5/manifest"
 	"github.com/containers/podman/v2/libpod"
@@ -197,6 +198,15 @@ func CompleteSpec(ctx context.Context, r *libpod.Runtime, s *specgen.SpecGenerat
 		annotations[ann.ContainerType] = ann.ContainerTypeContainer
 	}
 
+	for _, v := range rtc.Containers.Annotations {
+		split := strings.SplitN(v, "=", 2)
+		k := split[0]
+		v := ""
+		if len(split) == 2 {
+			v = split[1]
+		}
+		annotations[k] = v
+	}
 	// now pass in the values from client
 	for k, v := range s.Annotations {
 		annotations[k] = v