Increase the HD size on the build nodes

Fixes #228

buildman/manager/executor.py

@@ -114,7 +114,7 @@ class EC2Executor(BuilderExecutor):
     ec2_conn = self._get_conn()
 
     ssd_root_ebs = boto.ec2.blockdevicemapping.BlockDeviceType(
-        size=32,
+        size=48,
         volume_type='gp2',
         delete_on_termination=True,
     )

buildman/templates/cloudconfig.yaml

@@ -59,7 +59,7 @@ coreos:
         ConditionPathExists=!/var/lib/docker.btrfs
         [Service]
         Type=oneshot
-        ExecStart=/usr/bin/truncate --size=28G /var/lib/docker.btrfs
+        ExecStart=/usr/bin/truncate --size=42G /var/lib/docker.btrfs
         ExecStart=/usr/sbin/mkfs.btrfs /var/lib/docker.btrfs
     - name: var-lib-docker.mount
       enable: true