init.rc: start all 3 servicemanagers early

With the binder traffic of composer moved to vndbinder,
vndservicemanager is needed to be started early to get bootanim
displayed quickly.

Also servicemanager is required to be start early to support early
bootanim and sufaceflinger.

Bug: 37306311
Test: bootanim regression fixed
Change-Id: Ice1e05bdb3fe4e67a63a49f1db8afdb018c7b61b