Revert lint breaking .positive

Signed-off-by: Spencer Owen <spencer.owen@cdw.com>

Author: spencer-cdw

controls/account_policies.rb

@@ -45,7 +45,7 @@
     its('MaximumPasswordAge') { should be <= input('maximum_password_age') }
   end
   describe security_policy do
-    its('MaximumPasswordAge') { should be.positive? }
+    its('MaximumPasswordAge') { should be > 0 }
   end
 end
 
@@ -178,7 +178,7 @@
     its('LockoutBadCount') { should be <= 10 }
   end
   describe security_policy do
-    its('LockoutBadCount') { should be.positive? }
+    its('LockoutBadCount') { should be > 0 }
   end
 end