Host networking

Allow for the user to specify network=host|bridge.  If network
is not specified, the default will be bridge.  While "none" is now
a valid option, it is not included in this.

Signed-off-by: baude <bbaude@redhat.com>

Closes: #164
Approved by: rhatdan

test/podman_networking.bats

@@ -0,0 +1,23 @@
+#!/usr/bin/env bats
+
+load helpers
+
+function teardown() {
+    cleanup_test
+}
+
+function setup() {
+    copy_images
+}
+
+@test "test network connection with default bridge" {
+    run ${KPOD_BINARY} ${KPOD_OPTIONS} run -dt ${ALPINE} wget www.yahoo.com
+    echo "$output"
+    [ "$status" -eq 0 ]
+}
+
+@test "test network connection with host" {
+    run ${KPOD_BINARY} ${KPOD_OPTIONS} run -dt --network host ${ALPINE} wget www.yahoo.com
+    echo "$output"
+    [ "$status" -eq 0 ]
+}