In lxc detect boot from /proc/1 stats (canonical#2270)

* In lxc detect boot from /proc/1 stats

* Fix style checks

microk8s-resources/actions/common/utils.sh

@@ -674,14 +674,16 @@ is_first_boot() {
   # The last-start-date file contains a date in seconds
   # if that date is prior to the creation date of /proc/1 we assume this is the first
   # time after the host booted
+  # Note, lxc shares the same /proc/stat as the host
   if ! [ -e "$1/last-start-date" ] ||
      ! [ -e /proc/1 ]
   then
     return 1
   else
     last_start=$("$SNAP/bin/cat" "$1/last-start-date")
     if [ -e /proc/stat ] &&
-       grep btime /proc/stat
+       grep btime /proc/stat &&
+       ! grep lxc /proc/1/environ
     then
       boot_time=$(grep btime /proc/stat | cut -d' ' -f2)
     else

scripts/cluster/agent.py

@@ -9,7 +9,6 @@
 import subprocess
 import sys
 import time
-from typing import List
 
 import yaml
 

tests/test-addons.py

@@ -429,6 +429,6 @@ def test_openebs(self):
             validate_openebs()
             print("Disabling OpenEBS")
             microk8s_disable("openebs:force")
-        except CalledProcessError as err:
+        except CalledProcessError:
             print("Nothing to do, since iscsid is not available")
             return

tests/validators.py

@@ -1,6 +1,5 @@
 import time
 import os
-import shutil
 import re
 import requests
 import platform

tox.ini

@@ -9,7 +9,7 @@ envdir = {toxinidir}/.tox_env
 passenv =
     MK8S_*
 deps =
-    black
+    black ==21.4b2
     flake8
     flake8-colors
     pep8-naming
@@ -19,7 +19,7 @@ deps =
 [testenv:lint]
 commands =
     -flake8
-    codespell --ignore-words-list="aks" --quiet-level=2 --skip="*.patch,*.spec,.tox_env"
+    codespell --ignore-words-list="aks" --quiet-level=2 --skip="*.patch,*.spec,.tox_env,.git"
     black --diff --check --exclude "/(\.eggs|\.git|\.tox|\.venv|\.build|dist|charmhelpers|mod)/" .
 
 [testenv:func]