Tweak leak sanitizer suppressions for Cling, XrootD and TStreamerInfo with LCG97a

• Since the move to LCG 97a LHCb leak sanitiser builds have been swamped with errors like

==2164==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 16 byte(s) in 1 object(s) allocated from:
    #0 0x7f1ba34ee333 in operator new(unsigned long) /build/gcc/build/contrib/gcc-9.2.0/src/gcc/9.2.0/libsanitizer/lsan/lsan_interceptors.cc:222
    #1 0x7f1b8956159b in cling::Interpreter::ShutDown() (/cvmfs/lhcb.cern.ch/lib/lcg/releases/LCG_97a/ROOT/v6.20.06/x86_64-centos7-gcc9-dbg/lib/libCling.so+0x6aa59b)

which appears to be a leak from ROOT's cling during shutdown. This MR adds a suppression for this.

Issue submitted at https://sft.its.cern.ch/jira/browse/ROOT-10959

• Some additional tweaks to the suppressions for Xrootd and TStreamerInfo are also required.

@clemenci @graven could the lhcb-sanitizers label be added for this please ?

Gaudi/job/Gaudi-LSan.supp

@@ -59,7 +59,7 @@ leak:THistSvc::regHist_i
 #    #3 0x7f817782ab5d in THistWrite::initialize() ../GaudiExamples/src/THist/THistWrite.cpp:94
 leak:THistWrite::initialize
 
-# Note wure where in this lot the leak is ...
+# Note sure where in this lot the leak is ...
 #Indirect leak of 160 byte(s) in 1 object(s) allocated from:
 #    #0 0x7fde515afec8 in operator new[](unsigned long) /afs/cern.ch/cms/CAF/CMSCOMM/COMM_ECAL/dkonst/GCC/build/contrib/gcc-8.2.0/src/gcc/8.2.0/libsanitizer/lsan/lsan_interceptors.cc:231
 #    #1 0x7fde41c7610f in TString::Clobber(int) /mnt/build/jenkins/workspace/lcg_release_tar/BUILDTYPE/Debug/COMPILER/gcc8binutils/LABEL/centos7/build/projects/ROOT-6.18.00/src/ROOT/6.18.00/core/base/src/TString.cxx:1198
@@ -130,9 +130,12 @@ leak:TStreamerInfoActions::TActionSequence::CreateReadMemberWiseActions
 leak:TClass::New
 leak:TTree::CreateBasket
 leak:TNetXNGFile::TNetXNGFile
+leak:cling::Interpreter::ShutDown
+leak:TStreamerInfo::ReadBuffer<TVirtualCollectionProxy>
 
 # XrootD
-leak:XrdSys
+#leak:XrdSys
+leak:Xrd*
 
 # Xerces
 leak:xercesc_3_1::MemoryManagerImpl::allocate