[driver] add host-etc-os-release vol mount to peermem container

This issue should fix the unbound variable RHEL_VERSION when enabling rdma in rhel8.8 gpu-operator deployment

# k logs -n gpu-operator nvidia-driver-daemonset-lfzbj nvidia-peermem-ctr 
+ set -eu
+ RUN_DIR=/run/nvidia
+ PID_FILE=/run/nvidia/nvidia-driver.pid
+ DRIVER_VERSION=535.104.12
+ KERNEL_UPDATE_HOOK=/run/kernel/postinst.d/update-nvidia-driver
+ NUM_VGPU_DEVICES=0
+ NVIDIA_MODULE_PARAMS=()
+ NVIDIA_UVM_MODULE_PARAMS=()
+ NVIDIA_MODESET_MODULE_PARAMS=()
+ NVIDIA_PEERMEM_MODULE_PARAMS=()
+ TARGETARCH=amd64
+ USE_HOST_MOFED=false
+ DNF_RELEASEVER=
+ DRIVER_ARCH=x86_64
+ DRIVER_ARCH=x86_64
+ echo 'DRIVER_ARCH is x86_64'
DRIVER_ARCH is x86_64
+++ dirname -- /usr/local/bin/nvidia-driver
++ cd -- /usr/local/bin
++ pwd
+ SCRIPT_DIR=/usr/local/bin
+ source /usr/local/bin/common.sh
++ GPU_DIRECT_RDMA_ENABLED=false
++ GDS_ENABLED=false
+ '[' 1 -eq 0 ']'
+ command=reload_nvidia_peermem
+ shift
+ case "${command}" in
+ options=
+ '[' 0 -ne 0 ']'
+ eval set -- ''
++ set --
+ ACCEPT_LICENSE=
++ uname -r
+ KERNEL_VERSION=4.18.0-477.10.1.el8_8.x86_64
+ PRIVATE_KEY=
+ PACKAGE_TAG=
+ '[' 0 -ne 0 ']'
+ [[ -z '' ]]
+ _resolve_rhel_version
+ '[' -f /host-etc/os-release ']'
+ return 0
/usr/local/bin/nvidia-driver: line 757: RHEL_VERSION: unbound variable