CASTOR-5093 RFE: Change default location of /opt/xrootd/keys/key.pem to /etc/castor/key.pem

Fixed.

castor/castor.conf

@@ -385,7 +385,7 @@
 #XROOT   TIMEOUT               300
 
 # The file hosting the Xroot private key, needed to sign Xroot URLs
-#XROOT     PrivateKey          /opt/xrootd/keys/key.pem
+#XROOT     PrivateKey          /etc/castor/key.pem
 
 #
 # RFIO/RFIOD

castor/scheduler/diskmanager/xrootiface.py

@@ -55,7 +55,7 @@ def buildXrootURL(diskserver, path, transferId, transferType):
                  'castor.exptime' : str(int(time.time()) + 3600)}
 
   # get Xroot RSA key
-  keyFile = config.getValue('XROOT', 'PrivateKey', '/opt/xrootd/keys/key.pem')
+  keyFile = config.getValue('XROOT', 'PrivateKey', '/etc/castor/key.pem')
   key = RSA.importKey(open(keyFile, 'r').read())
   # sign opaque part obtained by concatenating the values
   opaque_token = ''.join([opaque_dict['castor.pfn1'],