In order to use the bionic libs and the dynamic linker from the runtime
APEX for all processes that are started after the APEX is activated, the
paths /system/lib/{libc.so|libm.so|libdl.so} and /system/bin/linker are
bind-mounted to the corresponding bionic libs and the dynamic linker
in the runtime APEX.

This bind mount allows us to keep other part of the platform and the
tests having implicit assumption that bionic libs are located at
/system/lib and loaded from the default linker namespace.

Bug: 120266448
Test: device boots

Change-Id: Ied611b267d187ee3d75a139c378ee12242d5b8d8