Merge pull request firecracker-microvm#514 from alakesh/fix-example-integ-test

Fix for integ-test failure in docker based example.

Author: alakesh

examples/Makefile

@@ -52,7 +52,7 @@ TEST_GATEWAY?=172.16.0.1
 TEST_IP?=172.16.0.2
 TEST_SUBNET?=/24
 FICD_DM_VOLUME_GROUP?=
-TEST_POOL?=
+TEST_POOL?=testpool
 testtap:
 	ip link add br0 type bridge
 	ip tuntap add tap0 mode tap