Comment 28 for bug 2016908

I confirm this dirty hack makes MAAS successfully deploy Lunar:

--- a/src/provisioningserver/kernel_opts.py
+++ b/src/provisioningserver/kernel_opts.py
@@ -111,9 +111,6 @@ def compose_purpose_opts(params):
         "cc:{'datasource_list': ['MAAS']}end_cc",
         # Read by cloud-init.
         "cloud-config-url=%s" % params.preseed_url,
- # Disable apparmor in the ephemeral environment. This addresses
- # MAAS bug LP: #1677336 due to LP: #1408106
- "apparmor=0",
     ]
     return kernel_params

We need to make this conditional on the Ubuntu release.