TT#182350 supporting index for reminder query

the SQL query for triage filtering of reminder
call records works faster with a supporting
index.

Change-Id: Id78a9b1486a2a704ddda2e1d249776254f13cd05

db_scripts/diff/15725.down

@@ -0,0 +1,3 @@
+USE provisioning;
+
+DROP INDEX active_time_idx ON voip_reminder;

db_scripts/diff/15725.up

@@ -0,0 +1,3 @@
+USE provisioning;
+
+CREATE INDEX active_time_idx ON voip_reminder (active, time);