LU-13590 kernel: new kernel [RHEL 7.9 3.10.0-1160.2.1.el7]

This patch makes changes to support new RHEL 7.9 release
for Lustre client.

Test-Parameters: trivial clientdistro=el7.9

Change-Id: I7a2846de48a6710d6d720d6ccc3176dba4afc6bb
Signed-off-by: Jian Yu <yujian@whamcloud.com>
Reviewed-on: https://review.whamcloud.com/40177

Reviewed-by: Yang Sheng <ys@whamcloud.com>
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>

lustre/ChangeLog

@@ -19,6 +19,7 @@ TBD Whamcloud
          3.10.0-957.27.2.el7  (RHEL7.6)
          3.10.0-1062.18.1.el7 (RHEL7.7)
          3.10.0-1127.8.2.el7  (RHEL7.8)
+         3.10.0-1160.2.1.el7  (RHEL7.9)
          4.18.0-80.11.2.el8   (RHEL8.0)
          4.4.180-94.97        (SLES12 SP3)
          4.12.14-95.54        (SLES12 SP4)

lustre/autoconf/lustre-core.m4

@@ -3790,6 +3790,7 @@ lustre/include/uapi/linux/lustre/Makefile
 lustre/kernel_patches/targets/4.18-rhel8.2.target
 lustre/kernel_patches/targets/4.18-rhel8.1.target
 lustre/kernel_patches/targets/4.18-rhel8.target
+lustre/kernel_patches/targets/3.10-rhel7.9.target
 lustre/kernel_patches/targets/3.10-rhel7.8.target
 lustre/kernel_patches/targets/3.10-rhel7.7.target
 lustre/kernel_patches/targets/3.10-rhel7.6.target

lustre/kernel_patches/targets/3.10-rhel7.9.target.in

+lnxmaj="3.10.0"
+lnxrel="1160.2.1.el7"
+
+KERNEL_SRPM=kernel-${lnxmaj}-${lnxrel}.src.rpm
+SERIES=""
+EXTRA_VERSION=${lnxrel}_lustre.@VERSION@
+LUSTRE_VERSION=@VERSION@
+
+DEVEL_PATH_ARCH_DELIMETER="."
+OFED_VERSION=inkernel
+
+BASE_ARCHS="i686 x86_64 ia64 ppc64"
+BIGMEM_ARCHS=""
+BOOT_ARCHS=""
+JENSEN_ARCHS=""
+#SMP_ARCHS="i686 x86_64 ia64 ppc64"
+# RHEL5 doesn't use smp specific kernels
+SMP_ARCHS=""
+UP_ARCHS=""
+
+for cc in gcc ; do
+    if which $cc >/dev/null 2>/dev/null ; then
+        export CC=$cc
+        break
+    fi
+done