fix bug in check for /boot

Signed-off-by: Martin Schurz <Martin.Schurz@t-systems.com>

molecule/os_hardening_vm/converge.yml

@@ -16,6 +16,7 @@
     os_auth_lockout_time: 15
     os_yum_repo_file_whitelist: ['foo.repo']
     os_mnt_boot_enabled: true
+    os_mnt_boot_src: "/dev/vda1"
 
 # - name: wrapper playbook for kitchen testing "ansible-os-hardening"
 #  hosts: all

roles/os_hardening/tasks/minimize_access.yml

@@ -96,7 +96,7 @@
   register: bootmount
   when:
     - os_mnt_boot_enabled | bool
-    - boot_exists | bool
+    - boot_exists.stat.exists | bool
 
 - name: Harden permissions for /boot directory
   file:
@@ -104,7 +104,7 @@
     owner: 'root'
     group: 'root'
     mode: '{{ os_mnt_boot_dir_mode }}'
-  when:  boot_exists | bool
+  when:  boot_exists.stat.exists | bool
 
 - name: Mount /dev with hardened options
   mount: