sandbox: Track and store the pod resolv.conf path

When we get a pod with DNS settings, we need to build
a resolv.conf file and mount it in all pod containers.
In order to do that, we have to track the built resolv.conf
file and store/load it.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

server/server.go

@@ -187,6 +187,7 @@ func (s *Server) loadSandbox(id string) error {
 		metadata:     &metadata,
 		shmPath:      m.Annotations["ocid/shm_path"],
 		privileged:   privileged,
+		resolvPath:   m.Annotations["ocid/resolv_path"],
 	}
 
 	// We add a netNS only if we can load a permanent one.