Use symlinks for directories that are symlinked

Use symlinks for directories that are symlinked

In the system the directory like /lib is a link to /usr/lib
In the sandbox we have performed two binds, which resulted in the fact
that from the sandbox perspective, the modificaiton (bind) in directory
/usr/lib was not visible in /lib

By using symlinks inside the sandbox the ISU package that
provides some libraries can bind it to one path:

  --bind #ISU_RUN_PATH#/service/rootfs/usr/lib/libservice.so.1 /usr/lib/libservice.so.1

instead of:

  --bind #ISU_RUN_PATH#/service/rootfs/usr/lib/libservice.so.1 /usr/lib/libservice.so.1
  --bind #ISU_RUN_PATH#/service/rootfs/usr/lib/libservice.so.1 /lib/libservice.so.1

Change-Id: I9c7c8854261546b2bc9f7111b3f90e9f9cd07c41