Fix Phoenix T2 permission issues on CM slaves

The Phoenix T2 tests need to used the installed Trafodion environment
which may or may not be owned by Jenkins. This will :

  * Starts the installation of Trafodion earlier
  * Change all $WORKSPACE/$TRAF_DIR/sqf references to $ILOC
  * Only exports LD_PRELOAD when all files exist
  * Check for core files in the entire workspace due to the
    possibility of core files being generated outside of the
    trafodion subdirectory.

Change-Id: Iaf2c286da6f1c6daa24b812623684fbf11e7a557
Merge "Fix Phoenix T2 permission issues on CM slaves"