[MSCCLPP] Use boost/filesystem on SLES15

[nileshnegi]

Details

Work item:
Internal

What were the changes?
Use boost/filesystem instead of C++ 17 filesystem in MSCCLPP on SLES 15.

Why were the changes made?
SLES 15.5 does not support C++ 17, so we cannot use filesystem methods. As an alternative, boost/filesystem can be used, but some modifications to MSCCLPP src are required.

How was the outcome achieved?
Apply sles-cpp-filesystem.patch to MSCCLPP src if CMake determines that the OS is SLES.

Approval Checklist

Do not approve until these items are satisfied.

• Verify the CHANGELOG has been updated, if
  • there are any NCCL API version changes,
  • any changes impact library users, and/or
  • any changes impact any other ROCm library.