allow for custom O2DPG repo in anchored testing

Author: sawenzel

MC/run/ANCHOR/tests/test_anchor_2tag_template.sh

@@ -53,5 +53,12 @@ export CYCLE=0
 # generator and other sim configuration
 export ALIEN_JDL_ANCHOR_SIM_OPTIONS="%{SIM_OPTIONS}"
 
+# we allow the possibility to use a special O2DPG version
+if [ "${O2DPG_CUSTOM_REPO}" ]; then
+  git clone "${O2DPG_CUSTOM_REPO}" O2DPG
+  export O2DPG_ROOT=${PWD}/O2DPG
+  export ALIEN_JDL_O2DPG_OVERWRITE=${PWD}/O2DPG
+fi
+
 # execute MC
 ${O2DPG_ROOT}/MC/run/ANCHOR/anchorMC.sh