[ATN] ovirt-engine dbscritps cleanup (master)

Hello All, The dbscripts of ovirt-engine master were cleaned up, to match other scripts in tree. Developer visible changes are: 1. Removal of create_schema.sh, upgrade.sh, cleandb.sh, refreshStoredProcedures.sh in favour of single schema.sh script, note the -c parameter. Usage: ./schema.sh [options] -h - This help text. -v - Turn on verbosity (WARNING: lots of output) -l LOGFILE - The logfile for capturing output (def. ) -s HOST - The database servername for the database (def. localhost) -p PORT - The database port for the database (def. 5432) -u USER - The username for the database (def. engine) -d DATABASE - The database name (def. engine) -m MD5FILE - Where to store schema MD5 files (def. ) -c COMMAND - Command: apply|refresh|drop -t - Force cleaning tasks and compensation info. 2. Introduction of schema-dev.sh as a wrapper to schema.sh with defaults as a utility for developers. - always enable md5. - always enable logging. - apply command as default. 3. Shell upgrade script is not receives entire settings via DBFUNC_* environment variables. Regards, Alon Bar-Lev