Check if boot_file_entry_present is defined before using it

The "Reboot block"'s when statements are just copied to every task in
the block, so each statement needs to be able to be evaluated. Both
earlier blocks that set the var could be skipped, check it's defined
before using it.

Signed-off-by: James Slagle <[email protected]>

Author: slagle

roles/edpm_kernel/tasks/kernelargs.yml

@@ -136,7 +136,7 @@
   when:
     - set_kernel_args is defined
     - set_kernel_args is true
-    - ansible_local.bootc
+    - ansible_local.bootc is defined and ansible_local.bootc
   block:
 
     - name: Check if the kernelargs entry is already present in the file
@@ -213,10 +213,10 @@
     - name: Reboot tasks
       ansible.builtin.include_tasks: reboot.yaml
       when:
-        - not boot_file_entry_present
+        - boot_file_entry_present is defined and not boot_file_entry_present
 
     - name: Skipping reboot for deployed node
       ansible.builtin.debug:  # noqa: no-handler
         msg: "Reboot is skipped for kernel arg change, user has to plan the reboot with migration and downtime"
       when:
-        - boot_file_entry_present
+        - boot_file_entry_present is defined and boot_file_entry_present