(PA-5807) Ignore yumrepo files managed by Puppet file resource

Previously we attempted to manage every repo that was found in the yumrepos
directory. If one of those repos was a Puppet File resource, yumrepo
would manage the yumrepo the Puppet File resource was creating. This casued
some idepontecy issues.
This change will make it so yumrepo will not attempt to manage any file resource
it finds that is found in the yumrepo directory.

lib/puppet/provider/yumrepo/inifile.rb

@@ -82,10 +82,10 @@ def new_physical_file(file)
   # @api public
   # @return [Array<Puppet::Provider>] providers generated from existing yum
   #   repository definitions.
-  def self.instances
+  def self.instances(resources = nil)
     instances = []
 
-    virtual_inifile.each_section do |section|
+    virtual_inifile(resources).each_section do |section|
       # Ignore the 'main' section in yum.conf since it's not a repository.
       next if section.name == 'main'
 
@@ -111,7 +111,7 @@ def self.instances
   # @param resources [Array<Puppet::Type::Yumrepo>] Resources to prefetch.
   # @return [void]
   def self.prefetch(resources)
-    repos = instances
+    repos = instances(resources)
     resources.each_key do |name|
       provider = repos.find { |repo| repo.name == name }
       if provider
@@ -182,14 +182,27 @@ def self.repofiles
 
   # Build a virtual inifile by reading in numerous .repo files into a single
   # virtual file to ease manipulation.
+  # Will skip any inifile that is found to be currently managed as a file resource
+  # in the catalog.
   # @api private
   # @return [Puppet::Provider::Yumrepo::IniConfig::File] The virtual inifile representing
   #   multiple real files.
-  def self.virtual_inifile
+  def self.virtual_inifile(resources = nil)
+    current_yumrepo_inis = []
+    resources&.each do |key|
+      current_yumrepo_inis << key[1]
+    end
+
     unless @virtual
       @virtual = Puppet::Provider::Yumrepo::IniConfig::File.new
       repofiles.each do |file|
-        @virtual.read(file) if Puppet::FileSystem.file?(file)
+        index_virtual = true
+        unless current_yumrepo_inis.empty?
+          current_yumrepo_inis.each do |index|
+            index_virtual = false if index.catalog.resource('File', file)
+          end
+        end
+        @virtual.read(file) if Puppet::FileSystem.file?(file) && index_virtual
       end
     end
     @virtual