init: try converting writepid used with cgroups into task_profiles command

writepid usage to add a task to a cgroup was deprecated in favor of the
task_profile command. The reason is that writepid hardcodes cgroup path
and makes it hard to change it in the future, whereas task profiles
configure cgroup paths in one centralized place and are easy to change.
Log a warning when writepid is used with cgroups and try converting it
into a task_profiles command for well-known cgroups. If conversion is
not possible the writepid operation will still be attempted to avoid
breaking existing use cases and an error will be logged.

Bug: 191283136
Test: build and boot
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Change-Id: Ie58393468ef7d92ab0ffb41e6f339e36d21f7478