MT#16491 accounting.cdr index for calls query optimization

Change-Id: I715eda053ffa9ecad640c0d999ab97f357cba34f

db_scripts/diff/15205.down

@@ -0,0 +1,6 @@
+use accounting;
+set autocommit=0;
+
+DROP INDEX src_dst_stime_idx ON accounting.cdr;
+
+commit;

db_scripts/diff/15205.up

@@ -0,0 +1,6 @@
+use accounting;
+set autocommit=0;
+
+CREATE INDEX src_dst_stime_idx ON accounting.cdr(source_cli, destination_user_in, start_time);
+
+commit;