seeded_rand: update funtion to ensure it returns an int not String

Ref: puppetlabs/puppet@3dcf66bb547

Author: b4ldr

lib/puppet/parser/functions/seeded_rand.rb

@@ -28,5 +28,5 @@
 
   max = args[0].to_i
   seed = Digest::MD5.hexdigest(args[1]).hex
-  Puppet::Util.deterministic_rand(seed, max)
+  Puppet::Util.deterministic_rand_int(seed, max)
 end