* Initial changes for log collector cgroups v2 support

* Fix pylint issues

* Fix pylint issues

* Fix pylint issues

* Check that both controllers are mounted in the chosen cgroups version for log collector

* Fix regex

* Update test_agent unit tests

* Fix unit tests

* Update format strings

* Fix broken cgroupconfigurator unit tests

* pyling

* Fix cgroups api unit tests

* Ignore unused args

* Ignore unused args

* Add cgroup configurator tests

* v2 required check in parent cgroup

* unit tests is_controller_enabled

* Fix test failure and pylint:

* pylint

* Update agent checks

* Fix controller enable logic and unit tests

* Remove changes to collect logs

* Fix pylint

* Add e2e test for v2

* get_cgroup_api should raise exception when controllers not mounted

* Combine cgroups_supported() check

* Combine SystemdCgroupsApi and CGroupApi classes

* fix pylint and tests with sudo

* Rename SystemdCgroupsApi to SystemdCgroupApi

* Cgroup should be singular when referring to the APi

* Unimpleneted methods should raise NotImplementederror

* Check for cpu,cpuacct

* v2 start extension command should not be implemented

* log_cgorup_info and log_cgroup_warning should be in cgroupapi

* Systemd check should come before api

* Explicitly check for empty dict

* Only check if controllers are enabled at root for v2

* Remove unnecessary mocked paths in mock cgroup env

* V2 does not have concept of mounting controllers

* Fix super call for python 2

* get_cgroup_api should be function

* Move logging functions up

* Use stat -f to get cgroup mode

* Mock hybrid path

* Fix unit tests:

* Debug tests

* Debug tests

* Debug unit tests

* Fix unit tests

* Fix pylint

* Fix e2e test for v2

* Fix e2e test

* Fix e2e test

* Fix e2e test

* Combine common implementations

* Run unit tests

* Clean up drop in files if cgroups are disabled

* Init values for cgroup apis

* Rever test change

* Fix merge issues

* Fix unit tests

* get_cgroup_api can raise InvalidCgroupMountpointException

* Add unit test for agent