sap_hana_preconfigure: update kernel parameters for SLES

roles/sap_hana_preconfigure/tasks/SLES/configuration.yml

@@ -32,6 +32,51 @@
       ansible.builtin.debug:
         var: __sap_hana_preconfigure_fact_solution_configured
 
+- name: Set GRUB entries
+  when: __sap_hana_preconfigure_run_saptune
+  handlers:
+    - name: GRUB_post-update_configuration
+      block:
+        - name: GRUB mkconfig
+          ansible.builtin.shell:
+            cmd: grub2-mkconfig -o /boot/grub2/grub.cfg
+
+        - name: GRUB.cfg permissions
+          ansible.builtin.file:
+            path: /boot/grub2/grub.cfg
+            mode: "0600"
+  block:
+    # Reason for noqa:
+    # no-changed-when: the regex do a check on the element before apply the
+    #   changed item, this prevent a replace to an element that is already in
+    #   the configuration
+    - name: Set GRUB entries # noqa no-changed-when
+      ansible.builtin.lineinfile:
+        path: /etc/default/grub
+        regexp: '^(GRUB_CMDLINE_LINUX_DEFAULT=(?!.* {{ item }}).*). *$'
+        line: "\\1 {{ item }}\""
+      register: set_grub_entries
+      with_items:
+        - "splash=silent"
+        - "mitigations=auto"
+        - "quiet"
+        - "numa_balancing=disable"
+        - "transparent_hugepage=never"
+        - "intel_idle.max_cstate=1"
+        - "processor.max_cstate=1"
+        - "audit=1"
+
+    # Reason for noqa:
+    # no-changed-when: there is already a check on the `when` argument that
+    # loop over all the results of the previous task and if some of the results
+    # changed the grub configuration file the `GRUB_post-update_configuration`
+    # handler will be notify, in the other hands if none of the item changed
+    # the configuration file no handler will be notify
+    - name: Trigger grub update if necessary # noqa no-changed-when
+      ansible.builtin.command: /bin/true
+      when: set_grub_entries.results | selectattr('changed', 'equalto', true) | list | length > 0
+      notify: GRUB_post-update_configuration
+
 - name: Enable sapconf
   when: not __sap_hana_preconfigure_run_saptune
   block: