TT#25451 use ngcp.timezone in v_timezone views

* ngcp.timezone is used in the
      v_subscriber_timezone
      v_contract_timezone
      v_reseller_timezone views as the fallback one

Change-Id: I52b7b413c7af3d54577665517197a13ca7a95b7d
(cherry picked from commit 7bf462428e)

db_scripts/diff/15374.down

@@ -0,0 +1,28 @@
+USE billing;
+
+CREATE OR REPLACE VIEW v_subscriber_timezone AS
+  SELECT sc.id as contact_id, s.id as subscriber_id, s.uuid,
+         COALESCE(sc.timezone, cc.timezone, rc.timezone) as name
+ FROM voip_subscribers s
+LEFT OUTER JOIN contacts sc ON sc.id = s.contact_id
+JOIN contracts c ON c.id = s.contract_id
+JOIN contacts cc ON cc.id = c.contact_id
+JOIN resellers r ON r.id = cc.reseller_id
+JOIN contracts i ON i.id = r.contract_id
+JOIN contacts rc ON rc.id = i.contact_id;
+
+CREATE OR REPLACE VIEW v_contract_timezone AS
+  SELECT cc.id as contact_id, c.id as contract_id,
+         COALESCE(cc.timezone, rc.timezone) as name
+ FROM contracts c
+JOIN contacts cc ON cc.id = c.contact_id
+JOIN resellers r ON r.id = cc.reseller_id
+JOIN contracts i ON i.id = r.contract_id
+JOIN contacts rc ON rc.id = i.contact_id;
+
+CREATE OR REPLACE VIEW v_reseller_timezone AS
+  SELECT rc.id as contact_id, r.id as reseller_id,
+         rc.timezone as name
+FROM resellers r
+JOIN contracts i ON i.id = r.contract_id
+JOIN contacts rc ON rc.id = i.contact_id;

db_scripts/diff/15374.up

@@ -0,0 +1,31 @@
+USE billing;
+
+CREATE OR REPLACE VIEW v_subscriber_timezone AS
+  SELECT sc.id as contact_id, s.id as subscriber_id, s.uuid,
+         COALESCE(sc.timezone, cc.timezone, rc.timezone, t.name) as name
+ FROM voip_subscribers s
+LEFT OUTER JOIN contacts sc ON sc.id = s.contact_id
+JOIN contracts c ON c.id = s.contract_id
+JOIN contacts cc ON cc.id = c.contact_id
+JOIN resellers r ON r.id = cc.reseller_id
+JOIN contracts i ON i.id = r.contract_id
+JOIN contacts rc ON rc.id = i.contact_id
+JOIN ngcp.timezone t;
+
+CREATE OR REPLACE VIEW v_contract_timezone AS
+  SELECT cc.id as contact_id, c.id as contract_id,
+         COALESCE(cc.timezone, rc.timezone, t.name) as name
+ FROM contracts c
+JOIN contacts cc ON cc.id = c.contact_id
+JOIN resellers r ON r.id = cc.reseller_id
+JOIN contracts i ON i.id = r.contract_id
+JOIN contacts rc ON rc.id = i.contact_id
+JOIN ngcp.timezone t;
+
+CREATE OR REPLACE VIEW v_reseller_timezone AS
+  SELECT rc.id as contact_id, r.id as reseller_id,
+         COALESCE(rc.timezone, t.name) as name
+FROM resellers r
+JOIN contracts i ON i.id = r.contract_id
+JOIN contacts rc ON rc.id = i.contact_id
+JOIN ngcp.timezone t;