tmt: support locally installed kernels in /prepare-system

Add support for STS_KERNEL=local, which will just use the booted kernel
and assume that all the necessary files are already installed in the
right place (no additional kernel RPMs will be installed).

Related: #99
Signed-off-by: Ondrej Mosnacek <[email protected]>

Author: WOnder93

tmt/README.md

@@ -17,3 +17,4 @@ Possible values for the `STS_KERNEL` env parameter are:
 * `default` - try to use the kernel currently booted on the test machine.
 * `latest` - update to the latest kernel available in the repos and boot it.
 * `secnext` - install the "secnext" kernel from https://repo.paul-moore.com/ and boot it.
+* `local` - use the currently booted kernel and don't try to install additional kernel RPMs - useful for e.g. locally built and installed kernels.

tmt/tests.fmf

@@ -38,6 +38,10 @@
           --repofrompath 'kernel-secnext,https://repo.paul-moore.com/rawhide/$basearch' \
           kernel-modules-*.secnext.* kernel-devel-*.secnext.*
         ;;
+      local)
+        # for a non-rpm directly-installed kernel - assume all necessary files
+        # are already in place and don't install any kernel packages
+        ;;
       *)
         echo "Invalid STS_KERNEL value!"
         exit 1