Change .file? to .exist? to avoid failing if it points at a directory

Author: Kevin Paulisse

lib/octocatalog-diff/catalog-util/fileresources.rb

@@ -36,7 +36,7 @@ def self.file_path(src, modulepaths)
         path = File.join(Regexp.last_match(1), 'files', Regexp.last_match(2))
         modulepaths.each do |mp|
           file = File.join(mp, path)
-          return file if File.file?(file)
+          return file if File.exist?(file)
         end
 
         nil

spec/octocatalog-diff/fixtures/repos/modulepath/modules/modulestest/files/foo/bar.txt

@@ -0,0 +1 @@
+# Hi

spec/octocatalog-diff/fixtures/repos/modulepath/modules/modulestest/manifests/init.pp

@@ -2,4 +2,10 @@
   file { '/tmp/modulestest':
     source => 'puppet:///modules/modulestest/tmp/modulestest',
   }
+
+  file { '/tmp/foobaz':
+    ensure  => directory,
+    source  => 'puppet:///modules/modulestest/foo',
+    recurse => true,
+  }
 }