Do not require user mapping for CMS XCache

https://github.com/opensciencegrid/xrootd-lcmaps/releases/tag/v1.5.0

> This release adds a new option to the xrootd-lcmaps plugin,
  --no-authz, that actually skips the LCMAPS callout.
>
> This can be used in cases where one would like a consistent invocation
of Globus and VOMS to validate the GSI and VOMS pieces, but don't need
to map the Xrootd user to a local Unix user.

configs/cms-xcache/config.d/50-cms-xcache-authz.cfg

@@ -15,7 +15,7 @@ sec.protocol /usr/lib64 gsi \
   -cert:/etc/grid-security/xrd/xrdcert.pem \
   -key:/etc/grid-security/xrd/xrdkey.pem \
   -crl:1 -authzfun:libXrdLcmaps.so \
-  -authzfunparms:lcmapscfg=/etc/xrootd/lcmaps.cfg,loglevel=1 \
+  -authzfunparms:lcmapscfg=/etc/xrootd/lcmaps.cfg,loglevel=1,no-authz \
   -gmapopt:10 -gmapto:0
 
 # The Authorization file for which users can do which actions: