Fix ldcache update on non debian systems

[elezar]

This change fixes the update of the ldcache when running a non-debian (including ubuntu) container on a debian-like system. Here the ldcache in the container does not initially include system libraries from /lib64 or /usr/lib64 since this ldconfig from the host that is executed in the container's namespace does not process those paths by default.

This is related to #1403 and will need to be updated once that is merged since we would also need to NOT include lib64 and /usr/lib64 in the list of folders if it's already present in the config folders for some reason.

Testing

The expected behaviour when using runc directly:

$ docker run --rm --runtime=runc redhat/ubi9 bash -c "ldconfig -p | grep libc.so."
        libc.so.6 (libc6,AArch64, OS ABI: Linux 3.7.0) => /lib64/libc.so.6

The current behaviour:

$ docker run --rm --runtime=nvidia -e NVIDIA_VISIBLE_DEVICES=all redhat/ubi9 bash -c "ldconfig -p | grep libc.so."

(note that libc.so.6 is not present in the ldcache since /lib64 (linked to /usr/lib64) is not processed).

The updated behaviour:

$ docker run --rm --runtime=nvidia -e NVIDIA_VISIBLE_DEVICES=all redhat/ubi9 bash -c "ldconfig -p | grep libc.so."
        libc.so.6 (libc6,AArch64, OS ABI: Linux 3.7.0) => /lib64/libc.so.6

[elezar]

/cherry-pick release-1.18