Whitespace cleanup

* remove trailing whitespace
* remove empty lines at the end of files

plugins/passenger/passenger_status

@@ -1,5 +1,5 @@
 #!/usr/bin/env ruby
- 
+
 def output_config
   puts <<-END
 graph_category webserver
@@ -24,7 +24,7 @@ waiting.info Requests waiting to be queued.
 END
   exit 0
 end
- 
+
 def output_values
   status = `sudo passenger-status`
   unless $?.success?
@@ -33,13 +33,13 @@ def output_values
   end
   status =~ /max\s+=\s+(\d+)/
   puts "max.value #{$1}"
- 
+
   status =~ /count\s+=\s+(\d+)/
   puts "running.value #{$1}"
- 
+
   status =~ /active\s+=\s+(\d+)/
   puts "active.value #{$1}"
- 
+
   status =~ /Waiting on global queue:\s+(\d+)/
   puts "waiting.value #{$1}"
 
@@ -47,7 +47,7 @@ def output_values
   status.scan(/Sessions: (\d+)/).flatten.each { |count| total_sessions += count.to_i }
   puts "sessions.value #{total_sessions}"
 end
- 
+
 if ARGV[0] == "config"
   output_config
 else