lakitu: Remove NPD from system-sysdaemons.slice

This is a weird design: ChromeOS put all its daemon
into system-sysdaemons and COS wants to follow. However
NPD is an open source, and natually put into system.slice.
If COS puts it into system-sysdaemons.slice by default,
this will break upstream NPD tests since the test will look
at system.slice for NPD's cgroup properties.

BUG=b/171355221
TEST=Presubmit & Manual
RELEASE_NOTE=None

Change-Id: I5a6a4c1a468135f046912d0a4a8baa94a9238ce0
2 files changed