Fix non-matching defaults. (#5452) (#5454)

(cherry picked from commit f84a9bf932)

plugins/modules/system/aix_lvol.py

@@ -61,11 +61,13 @@ options:
     description:
     - Free-form options to be passed to the mklv command.
     type: str
+    default: ''
   pvs:
     description:
     - A list of physical volumes e.g. C(hdisk1,hdisk2).
     type: list
     elements: str
+    default: []
 '''
 
 EXAMPLES = r'''

plugins/modules/system/java_cert.py

@@ -55,7 +55,6 @@ options:
     description:
       - Password for importing from PKCS12 keystore.
     type: str
-    default: ''
   pkcs12_alias:
     description:
       - Alias in the PKCS12 keystore.

plugins/modules/system/lvg.py

@@ -41,6 +41,7 @@ options:
     description:
     - Additional options to pass to C(pvcreate) when creating the volume group.
     type: str
+    default: ''
   pvresize:
     description:
     - If C(yes), resize the physical volume to the maximum available size.
@@ -51,6 +52,7 @@ options:
     description:
     - Additional options to pass to C(vgcreate) when creating the volume group.
     type: str
+    default: ''
   state:
     description:
     - Control if the volume group exists.

plugins/modules/system/selinux_permissive.py

@@ -37,6 +37,7 @@ options:
     description:
       - Name of the SELinux policy store to use.
     type: str
+    default: ''
 notes:
     - Requires a recent version of SELinux and C(policycoreutils-python) (EL 6 or newer).
 requirements: [ policycoreutils-python ]