Merge pull request #931 from Naresh-ibm/Gcov_grub_rebuild_fix

Adding the grub rebuild command after Gcov kernel Install

Author: PraveenPenguin

testcases/GcovSetup.py

@@ -199,6 +199,7 @@ def build_and_boot(self, config_path):
             cmd = f"make -j modules_install && make install"
             if not self.cv_HOST.host_run_command(cmd):
                 self.fail("module installation failed")
+            self.cv_HOST.host_run_command("grub2-mkconfig -o /boot/grub2/grub.cfg")
         except Exception:
             self.fail("compile and build of gcov kernel failed")