MRS migration to POEM:
1. Set DB name and password (Files *_upgrade.sh)
   Set startTime, endTime in mig2POEM_1.sql

2. Migration - part 1/2
   Call scripts in sequence (Check in SessionManager [1] if script finished):
   - 1_upgrade_mrs.sh
   - 2_upgrade_mrs.sh
   - 2_1_upgrade_mrs.sh

3. Migration - part 2/2 (It will take much time, since it's metricdata, which has many records)
   This should be done as the last step (after YAIM execution and enabling normal execution of grid-monitoring)
   Call scripts in sequence:
   - 3_upgrade_mrs.sh
   - 4_upgrade_mrs.sh

[1] https://twiki.cern.ch/twiki/bin/view/PDBService/SessionsManager
