Fix quoting bug in zfs. (#4726)

changelogs/fragments/4726-zfs.yml

@@ -0,0 +1,2 @@
+bugfixes:
+  - "zfs - fix wrong quoting of properties (https://github.com/ansible-collections/community.general/issues/4707, https://github.com/ansible-collections/community.general/pull/4726)."

plugins/modules/storage/zfs/zfs.py

@@ -160,7 +160,7 @@ class Zfs(object):
                 elif prop == 'volblocksize':
                     cmd += ['-b', value]
                 else:
-                    cmd += ['-o', '%s="%s"' % (prop, value)]
+                    cmd += ['-o', '%s=%s' % (prop, value)]
         if origin and action == 'clone':
             cmd.append(origin)
         cmd.append(self.name)