[FIX] Issue #529: become plugin podman_unshare become_user default (#530)

Signed-off-by: Janos Gerzson <[email protected]>

Signed-off-by: Janos Gerzson <[email protected]>

Author: grzs

plugins/become/podman_unshare.py

@@ -17,8 +17,7 @@
     version_added: 1.9.0
     options:
         become_user:
-            description: User you 'become' to execute the task
-            default: root
+            description: User you 'become' to execute the task ('root' is not a valid value here).
             ini:
               - section: privilege_escalation
                 key: become_user
@@ -130,8 +129,8 @@ def build_become_command(self, cmd, shell):
 
         becomecmd = 'podman unshare'
 
-        user = self.get_option('become_user') or ''
-        if user:
+        user = self.get_option('become_user') or 'root'
+        if user != 'root':
             cmdlist = [self.get_option('become_exe') or 'sudo']
             # -i is required, because
             # podman unshare should be executed in a login shell to avoid chdir permission errors