Switch to using the listen gem for Mac OSX support

Gemfile

@@ -46,6 +46,7 @@ gem "inifile",                        "~>3.0",         :require => false
 gem "inventory_refresh",              "~>0.2.0",       :require => false
 gem "kubeclient",                     "~>4.0",         :require => false # For scaling pods at runtime
 gem "linux_admin",                    "~>2.0", ">=2.0.1", :require => false
+gem "listen",                         "~>3.2",         :require => false
 gem "log_decorator",                  "~>0.1",         :require => false
 gem "manageiq-api-client",            "~>0.3.4",       :require => false
 gem "manageiq-loggers",               "~>0.5.0",       :require => false
@@ -68,7 +69,6 @@ gem "query_relation",                 "~>0.1.0",       :require => false
 gem "rails",                          "~>5.2.4", ">=5.2.4.4"
 gem "rails-i18n",                     "~>5.x"
 gem "rake",                           ">=12.3.3",      :require => false
-gem "rb-inotify",                     "~>0.10.0",      :require => false
 gem "rest-client",                    "~>2.1.0",       :require => false
 gem "ripper_ruby_parser",             "~>1.5.1",       :require => false
 gem "ruby-progressbar",               "~>1.7.0",       :require => false

lib/ansible/runner.rb

@@ -363,28 +363,27 @@ def pid_file(base_dir)
       end
 
       def wait_for(path)
-        require "rb-inotify"
+        require "listen"
+        require "concurrent"
+
         dir_name  = File.dirname(path)
         file_name = File.basename(path)
 
         path_created = Concurrent::Event.new
 
-        notifier = INotify::Notifier.new
-        notifier.watch(dir_name, :moved_to, :create) do |event|
-          # Once the file we are looking for is created set the concurrent event
-          path_created.set if event.name == file_name
+        listener = Listen.to(dir_name, :only => %r{\A#{file_name}\z}) do |modified, added, _removed|
+          path_created.set if added.include?(path) || modified.include?(path)
         end
 
-        thread = Thread.new { notifier.run }
-
-        res = yield
-
-        # Wait for the target file to exist
-        path_created.wait
+        thread = Thread.new { listener.start }
 
-        # Shutdown the inotify loop and join the thread
-        notifier.close
-        thread.join
+        begin
+          res = yield
+          path_created.wait
+        ensure
+          listener.stop
+          thread.join
+        end
 
         res
       end