Fix Lint/DeprecatedClassMethods

Result of:

    rubocop --autocorrect --only Lint/DeprecatedClassMethods

lib/puppet/provider/ca/katello_ssl_tool.rb

@@ -40,7 +40,7 @@ def existing_pubkey
   end
 
   def deploy!
-    if File.exists?(rpmfile)
+    if File.exist?(rpmfile)
       # the rpm is available locally on the file system
       rpm('-Uvh', '--force', rpmfile)
     else

lib/puppet/provider/katello_ssl_tool.rb

@@ -59,7 +59,7 @@ def generate!
     def generate?
       return false unless resource[:generate]
       return true if resource[:regenerate]
-      return true if File.exists?(update_file)
+      return true if File.exist?(update_file)
       return files_to_generate.any? { |file| ! File.exist?(file) }
     end
 
@@ -79,7 +79,7 @@ def files_to_deploy
     end
 
     def deploy!
-      if File.exists?(rpmfile)
+      if File.exist?(rpmfile)
         if(system("rpm -q #{rpmfile_base_name} &>/dev/null"))
           rpm('-e', rpmfile_base_name)
         end
@@ -91,7 +91,7 @@ def deploy!
     end
 
     def needs_deploy?
-      if File.exists?(rpmfile)
+      if File.exist?(rpmfile)
         # the installed version doesn't match the rpmfile
         !system("rpm --verify -p #{rpmfile} &>/dev/null")
       else
@@ -177,8 +177,8 @@ class CertFile < Puppet::Provider
     commands :openssl => 'openssl'
 
     def exists?
-      return false unless File.exists?(resource[:path])
-      return false unless File.exists?(source_path)
+      return false unless File.exist?(resource[:path])
+      return false unless File.exist?(source_path)
       expected_content_processed == current_content
     end
 

lib/puppet/provider/key_bundle/katello_ssl_tool.rb

@@ -3,9 +3,9 @@
 Puppet::Type.type(:key_bundle).provide(:katello_ssl_tool, :parent => Puppet::Provider::KatelloSslTool::CertFile) do
 
   def exists?
-    return false unless File.exists?(resource[:path])
-    return false unless File.exists?(privkey_source_path)
-    return false unless File.exists?(pubkey_source_path)
+    return false unless File.exist?(resource[:path])
+    return false unless File.exist?(privkey_source_path)
+    return false unless File.exist?(pubkey_source_path)
     expected_content_processed == current_content
   end