WIP: lhcb-gauss-dev: force CRMC from a special build

this is not to be merged, but I wanted to keep track of how I tested the patched version of CRMC provided by SFT.

The test build I used is testing/lhcb-gauss-dev/2014.

lhcbnightlyconf/Gauss.py

@@ -215,6 +215,9 @@ gaussDev.projects.append(Project('LCG', '96b', disabled=True))
 gaussDev.projects.append(Project('Gaudi', 'master'))
 gaussDev.projects.append(Project('Detector', 'v0-patches'))
 gaussDev.projects.append(Project('LHCb', 'HEAD'))
+# Temporary: force CRMC from a special build
+gaussDev.cache_entries[
+    'CRMC_INCLUDE_DIR'] = '/cvmfs/sft-nightlies.cern.ch/lcg/nightlies/dev3/Thu/MCGenerators/crmc/1.6.0/x86_64-centos7-gcc9-opt/src'
 # Temp hack to trigger slot rebuild
 gaussDev.metadata = {'rebuildAlways': str(datetime.date.today())}
 slots.append(gaussDev)