centos spec: version set to 3.0.2

(cherry picked from commit e5560029f04058642bebb09a1a1b7df699c5f80b)

pkg/kamailio/rpm/kamailio.spec.CenOS

@@ -1,5 +1,5 @@
 %define name    kamailio
-%define ver     3.0.1
+%define ver     3.0.2
 %define rel     0
 %define _sharedir %{_prefix}/share