Now that the nodepool builder is running as a separate daemon it needs
its own log config file. Move the auto generated nodepool logging config
stuff over to the new builder logging config as we can manage the main
daemon's logging config by hand trivially now.
Depends-On: I013835621dfbc311a0f7bd7c957b7d4656dfa628
Change-Id: Ic1da30eab949876e5bd6c88e83979bdedc6dd50a