Merge ~jocave/plainbox-provider-resource:kernel-extraction-uc20 into plainbox-provider-resource:master

[Jonathan Cave]

Simplest option for this flag that is no longer needed on UC20 is just to set it to always True. This means there is no need to jump through hoops in jobs that rely on this resource elsewhere. Let me know if you think if this is cheating!

[Maciej Kisielewski (kissiel)]

It is cheating. I like it. +1

review: Approve

[Devices Certification Bot (ce-certification-qa)]

The merge was fine but running tests failed.

[xenial] [12:04:17] starting container
Device project added to xenial-testing
[focal] [12:04:23] starting container
Device project added to focal-testing
[xenial] [12:04:29] provisioning container
[focal] [12:04:38] provisioning container
[xenial] [12:04:44] Starting tests...
[xenial] Found a test script: ./requirements/container-tests-provider-resource-generic
[focal] [12:05:12] Starting tests...
[focal] Found a test script: ./requirements/container-tests-provider-resource-generic
[bionic] [12:05:54] starting container
Device project added to bionic-testing
[bionic] [12:06:08] provisioning container
[bionic] [12:06:31] Starting tests...
[bionic] Found a test script: ./requirements/container-tests-provider-resource-generic
[focal] [12:10:45] container-tests-provider-resource-generic: FAIL
[xenial] [12:10:48] container-tests-provider-resource-generic: FAIL
[focal] output: https://paste.ubuntu.com/p/bT9q2J2Qm2/
[focal] [12:10:48] Fixing file permissions in source directory
[focal] [12:10:48] Destroying container
[xenial] output: https://paste.ubuntu.com/p/fgQ7p7Kc9n/
[xenial] [12:10:50] Fixing file permissions in source directory
[xenial] [12:10:51] Destroying container
[bionic] [12:11:03] container-tests-provider-resource-generic: FAIL
[bionic] output: https://paste.ubuntu.com/p/cNhQdCKz6P/
[bionic] [12:11:06] Fixing file permissions in source directory
[bionic] [12:11:06] Destroying container

review: Needs Fixing

diff --git a/bin/snapd_resource.py b/bin/snapd_resource.py
index fa3ef46..409acb1 100755
--- a/bin/snapd_resource.py
+++ b/bin/snapd_resource.py
@@ -15,6 +15,7 @@ from checkbox_support.snap_utils.asserts import model_to_resource
 from checkbox_support.snap_utils.asserts import serial_to_resource
 from checkbox_support.snap_utils.snapd import Snapd
 from checkbox_support.snap_utils.system import get_kernel_snap
+from checkbox_support.snap_utils.system import get_series
 
 from collections import namedtuple
 
@@ -176,6 +177,10 @@ class Features():
         encryption as it ensures that the kernel.img is available to the
         bootloader prior to decrypting the writable partition.
         '''
+        # UC 20 no longer requires file presence
+        if int(get_series()) >= 20:
+            print('force_kernel_extraction: True')
+            return
         snap = get_kernel_snap()
         if snap is not None:
             feature_f = '/snap/{}/current/meta/force-kernel-extraction'.format(