[LU-13555] Do not treat repo ml kernels as 'special' just map them to RHEL

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.14.0
• Severity: 3
• Assignee: Shaun Tancheff
• Reporter: Shaun Tancheff

Description

Do not treat repo ml kernels as 'special' just map them to RHEL

Currently the lustre-build-linux.m4 check for ELRepo mainline kernel build check maps to MAINLINE_KERNEL but it is cleaner to simply map them to RHEL_KERNEL and discard the special redundant test.