test(script): update config path to share/simphony/config

Upstream renamed the share dir from 'eic-opticks' to 'simphony' (PR #322
or similar). After rebase the validation script's EIC_OPTICKS_CFG default
was pointing at the old path; binaries couldn't find trap_iso.json and
aborted with std::runtime_error "Could not find config file".

Author: ggalgoczi

tests/g4trap_validation.sh

@@ -21,7 +21,7 @@
 set -e
 
 EIC_OPTICKS_BIN=${EIC_OPTICKS_BIN:-/opt/eic-opticks/bin}
-EIC_OPTICKS_CFG=${EIC_OPTICKS_CFG:-/opt/eic-opticks/share/eic-opticks/config}
+EIC_OPTICKS_CFG=${EIC_OPTICKS_CFG:-/opt/eic-opticks/share/simphony/config}
 SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 GEOM_DIR="${SCRIPT_DIR}/geom"
 OUT_DIR=${OUT_DIR:-/tmp/g4trap_validation}