Add grubby to handle latest grub2 changes

With latest grub2 installer, one should set the
kernel to be booted explicitly after update or
install of latest kernel

Signed-off-by: Abdul Haleem <[email protected]>

Author: abdhaleegit

Diff for: testcases/InstallUpstreamKernel.py

@@ -116,6 +116,7 @@ def is_url(path):
             con.run_command("make %s" % self.config)
             # Capture kernel version & release
             res = con.run_command("make kernelrelease")
+            print(res)
             sha = con.run_command("git rev-parse HEAD")
             tcommit = con.run_command("export 'TERM=xterm-256color';git show -s --format=%ci")
             tcommit = re.sub(r"\x1b\[[0-9;]*[mGKHF]", "", tcommit[1])
@@ -128,8 +129,9 @@ def is_url(path):
             time.sleep(10)
             if not self.use_kexec:
                 # FIXME: Handle distributions which do not support grub
-                con.run_command(
-                    "grub2-mkconfig  --output=/boot/grub2/grub.cfg")
+                #con.run_command(
+                #    "grub2-mkconfig  --output=/boot/grub2/grub.cfg")
+                con.run_command("grubby --set-default /boot/vmlinuz-%s" % res[-1])
                 log.debug("Rebooting after kernel install...")
                 self.console_thread.console_terminate()
                 con.close()