Adding version to the user-agent

Author: djw8605

bin/stashcp

@@ -16,6 +16,9 @@ import shutil
 import logging
 from urlparse import urlparse
 
+# Version information for user-agent
+VERSION = "5.1.1"
+
 main_redirector = "root://redirector.osgstorage.org"
 stash_origin = "root://stash.osgconnect.net"
 writeback_host = "http://stash-xrd.osgconnect.net:1094"
@@ -404,7 +407,7 @@ def get_best_stashcache():
     append_text = "api/v1.0/geo/stashcp"
 
     # Headers for the HTTP request
-    headers = {'Cache-control': 'max-age=0', 'User-Agent': 'stashcp/4.3.1'}
+    headers = {'Cache-control': 'max-age=0', 'User-Agent': 'stashcp/{}'.format(VERSION)}
 
     # Randomize the geo ip sites
     random.shuffle(geo_ip_sites)