Change stashcp to read caches list from wlcg-wpad servers by default

docs/configs/caches.json

@@ -0,0 +1,10 @@
+[ 
+    {"name":"root://its-condor-xrootd1.syr.edu", "status":1},
+    {"name":"root://sc-cache.chtc.wisc.edu", "status":1},
+    {"name":"root://osg-new-york-stashcache.nrp.internet2.edu", "status":1},
+    {"name":"root://osg-kansas-city-stashcache.nrp.internet2.edu", "status":1},
+    {"name":"root://osg-chicago-stashcache.nrp.internet2.edu", "status":1},
+    {"name":"root://fiona.uvalight.net", "status":1},
+    {"name":"root://stashcache.t2.ucsd.edu", "status":1},
+    {"name":"root://osg-gftp.pace.gatech.edu", "status":1}
+]

explanation.md

@@ -1,3 +1,5 @@
+WARNING: this is out of date.  It is only left for historical reasons
+
 ## Usage
 
 ```
@@ -139,4 +141,4 @@ It is recommended that `$timeout` not be set to 1 second, as tests showed that d
 
 * No record of whether the file was new to the cache it was pulled from or not
 
-* Does not currently allow for file renaming.
+* Does not currently allow for file renaming.

setup.py

@@ -152,17 +152,14 @@
     #
     # If using Python 2.6 or earlier, then these have to be included in
     # MANIFEST.in as well.
-    package_data={'stashcp': ['caches.json'],},
-    #package_data={  # Optional
-    #    '': ['bin/caches.json'],
-    #},
+    package_data={'stashcp': ['opensciencegrid.org.pub'],},
 
     # Although 'package_data' is the preferred approach, in some case you may
     # need to place data files outside of your packages. See:
     # http://docs.python.org/3.4/distutils/setupscript.html#installing-additional-files
     #
     # In this case, 'data_file' will be installed into '<sys.prefix>/my_data'
-    data_files=[('share/stashcache/', ['stashcp/caches.json'])],
+    data_files=[('share/stashcache/', ['stashcp/opensciencegrid.org.pub'])],
 
     # To provide executable scripts, use entry points in preference to the
     # "scripts" keyword. Entry points provide cross-platform support and allow