Use a hvm machine for testing.

Author: rbvermaa

tests/functional/single_machine_ec2_base.nix

@@ -21,7 +21,7 @@ in
       deployment.targetEnv = "ec2";
       deployment.ec2 = {
         inherit region;
-        instanceType = "m1.small";
+        instanceType = "c3.large";
         securityGroups = [ resources.ec2SecurityGroups.ssh-security-group ];
         keyPair = resources.ec2KeyPairs.my-key-pair;
       };