Merge ~skatsaounis/maas:lp-2048399-3.4-2 into maas:3.4

[Stamatis Katsaounis]

Use LTS channel for LXD installation on VM Hosts

(cherry picked from commit a6d3acace70c77906bc68e6b7bd13d03343d3c84)

[Stamatis Katsaounis (skatsaounis)]

Self-approve backport

review: Approve

[MAAS Lander (maas-lander)]

UNIT TESTS
-b lp-2048399-3.4-2 lp:~skatsaounis/maas/+git/maas into -b 3.4 lp:~maas-committers/maas

STATUS: SUCCESS
COMMIT: 9f3827fb5c21470c2449f7412eb2862ee318b953

review: Approve

diff --git a/src/metadataserver/tests/test_vendor_data.py b/src/metadataserver/tests/test_vendor_data.py
index a8272c7..dfa59d8 100644
--- a/src/metadataserver/tests/test_vendor_data.py
+++ b/src/metadataserver/tests/test_vendor_data.py
@@ -462,8 +462,8 @@ class TestGenerateKVMPodConfiguration(MAASServerTestCase):
                     "runcmd",
                     [
                         "apt autoremove --purge --yes lxd lxd-client lxcfs",
-                        "snap install lxd --channel=5.19/stable",
-                        "snap refresh lxd --channel=5.19/stable",
+                        "snap install lxd --channel=5.21/stable",
+                        "snap refresh lxd --channel=5.21/stable",
                         "lxd init --auto --network-address=[::]",
                         "lxc project create maas",
                         "lxc config trust add /root/lxd.crt --restricted --projects maas",
diff --git a/src/metadataserver/vendor_data.py b/src/metadataserver/vendor_data.py
index d68f9b4..14711a1 100644
--- a/src/metadataserver/vendor_data.py
+++ b/src/metadataserver/vendor_data.py
@@ -237,8 +237,8 @@ def generate_kvm_pod_configuration(node):
         # installed by default in Focal.
         yield "runcmd", [
             "apt autoremove --purge --yes lxd lxd-client lxcfs",
-            "snap install lxd --channel=5.19/stable",
-            "snap refresh lxd --channel=5.19/stable",
+            "snap install lxd --channel=5.21/stable",
+            "snap refresh lxd --channel=5.21/stable",
             "lxd init --auto --network-address=[::]",
             f"lxc project create {maas_project}",
             f"lxc config trust add {cert_file} --restricted --projects {maas_project}",