builder/amazon/common: support NoDevice [GH-396]

CHANGELOG.md

@@ -17,6 +17,7 @@ IMPROVEMENTS:
 
 * builder/amazon/all: Ability to specify the format of the temporary
   keypair created. [GH-389]
+* builder/amazon/all: Support the NoDevice flag for block mappings. [GH-396]
 * builder/digitalocean: Retry on any pending event errors.
 * builder/openstack: Can now specify a project. [GH-382]
 * builder/virtualbox: Can now attach hard drive over SATA. [GH-391]

builder/amazon/common/block_device.go

@@ -13,6 +13,7 @@ type BlockDevice struct {
 	VolumeSize          int64  `mapstructure:"volume_size"`
 	DeleteOnTermination bool   `mapstructure:"delete_on_termination"`
 	IOPS                int64  `mapstructure:"iops"`
+	NoDevice            bool   `mapstructure:"no_device"`
 }
 
 type BlockDevices struct {
@@ -32,6 +33,7 @@ func buildBlockDevices(b []BlockDevice) []ec2.BlockDeviceMapping {
 			VolumeSize:          blockDevice.VolumeSize,
 			DeleteOnTermination: blockDevice.DeleteOnTermination,
 			IOPS:                blockDevice.IOPS,
+			NoDevice:            blockDevice.NoDevice,
 		})
 	}
 	return blockDevices