Alex Kavanagh 9c12812735 Switch the charm to support py3
Some major changes:
* the charm has been rebased (from a Python perspective) to be rooted in
  the charm directory.  This is a single root.
* Imports have been changed so that the don't add lots of imports to the
  namespace of the module doing the import.
* The code that used to run at module import time has been made lazy
  such that it only has to run if the relevant functions are called.
  This includes restart_on_change parameters, the harden function and
  the parameters to the guard_map.  Appropriate changes will be
  submitted to charm-helpers.
* Several tests had to be re-written as (incorrect) mocking meant that
  text fixtures didn't actually match what the code was doing.  Thus,
  the tests were meaningless.
* This has had a net positive impact on the unit tests wrt to importing
  modules and mocking.

Change-Id: Id07d9d1caaa9b29453a63c2e49ba831071e9457f
2018-10-18 15:43:03 +01:00

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# NOTE: this schema must contain all valid keys from it's associated defaults
# file. It is used to validate user-provided overrides.
general:
desktop_enable:
environment:
extra_user_paths:
umask:
root_path:
auth:
pw_max_age:
pw_min_age:
retries:
lockout_time:
timeout:
allow_homeless:
pam_passwdqc_enable:
pam_passwdqc_options:
root_ttys:
uid_min:
gid_min:
sys_uid_min:
sys_uid_max:
sys_gid_min:
sys_gid_max:
chfn_restrict:
security:
users_allow:
suid_sgid_enforce:
suid_sgid_blacklist:
suid_sgid_whitelist:
suid_sgid_dry_run_on_unknown:
suid_sgid_remove_from_unknown:
packages_clean:
packages_list:
kernel_enable_module_loading:
kernel_enable_core_dump:
ssh_tmout:
sysctl:
kernel_secure_sysrq:
kernel_enable_sysrq:
forwarding:
ipv6_enable:
arp_restricted: