1. unify install.xml location

2. in ri_data.py, fix an error on Raid instance construction
3. in ri_func_dep.py, use common function ri_data.Group.get_install_pkgs()
4. in ri_install.py, add logic to config install.xml location
5. rename test.py to ri_main.py
6. in ri_main.py, add logic to set config.xml location
7. in ri_main.py, modify the way to get parameters.

main/setup

@@ -42,7 +42,7 @@ config_execfile(){
     if [ -f ${work_write_dir}/install.xml ]; then 
 	echo "python check_oldconf.py -l $1 " >> ${work_write_dir}/${exec_file}
     fi
-    echo "python test.py -l $1" >> ${work_write_dir}/${exec_file}
+    echo "python ri_main.py -l $1" >> ${work_write_dir}/${exec_file}
 }
       
 main(){