Closer target kernel tracking

- This makes ScoutFS packages more directly tied to a given kernel while
  still allowing for weak modules usage when possible.
- For EL9, this still prevents the installation of kmod packages across
  minor releases, which no longer have strict kABI gurantees.

kmod/scoutfs-kmod.spec.in

@@ -7,6 +7,8 @@
 # take kernel version or default to uname -r
 %{!?kversion: %global kversion %(uname -r)}
 %global kernel_version %{kversion}
+%
+%define kernel_version_extra %(sed 's/.*-\\([0-9]\\+\\).*/\\1/' <<< "%{kernel_version}")
 
 %if 0%{?el7}
 %global kernel_source() /usr/src/kernels/%{kernel_version}.$(arch)
@@ -23,10 +25,12 @@ Name:           kmod-%{kmod_name}
 %endif
 Summary:        %{kmod_name} kernel module
 Version:        %{kmod_version}
-Release:        %{_release}%{?dist}
+Release:        %{_release}.%{kernel_version_extra}%{?dist}
 License:        GPLv2
 Group:          System/Kernel
 URL:            http://scoutfs.org/
+Requires:       kernel-core-uname-r >= %{kernel_version}
+Requires:       kernel-modules-uname-r >= %{kernel_version}
 
 %if 0%{?el7}
 BuildRequires:  %{kernel_module_package_buildreqs}