Use library-go ApplyDeployment and ApplyDaemonset

Our current functions in ./lib are out of date and we should be using
library-go instead

The library-go functions require passing the generation of the
previously applied deployment/daemonset, and this should be stored on an
MCO CRD. Because this currently doesn't exist, the existing generation
is passed as generation. This is no worse than how MCO's current
functions work, so the library-go functions should still be used until
an MCO CRD is created.

Files with the now unused functions and unused helper functions were
removed:
resourceapply/apps.go
resourcemerge/{apps.go,apps_test.go,core.go,core_test.go}

Helps openshift#819