Remove eventids collection

This is the schema change for the following service-side change:
CatalystCode/project-fortis-services#92

ops/storage-ddls/cassandra-setup.cql

@@ -175,27 +175,27 @@ CREATE TABLE popularplaces (
 
 DROP TABLE IF EXISTS eventtopics;
 CREATE TABLE eventtopics(
-    eventids set<text>,
+    eventid text,
     topic text,
-    insertiontime timestamp,
+    eventtime timestamp,
     pipelinekey text,
     externalsourceid text,
-    PRIMARY KEY ((topic), pipelinekey, externalsourceid)
+    PRIMARY KEY ((topic), pipelinekey, externalsourceid, eventtime, eventid)
 );
 
 DROP TABLE IF EXISTS eventplaces;
 CREATE TABLE eventplaces(
-    eventids set<text>,
+    eventid text,
     conjunctiontopic1 text,
     conjunctiontopic2 text,
     conjunctiontopic3 text,
     centroidlat double,
     centroidlon double,
     placeid text,
-    insertiontime timestamp,
+    eventtime timestamp,
     pipelinekey text,
     externalsourceid text,
-    PRIMARY KEY ((placeid), conjunctiontopic1, conjunctiontopic2, conjunctiontopic3, pipelinekey, externalsourceid, centroidlat, centroidlon)
+    PRIMARY KEY ((placeid, conjunctiontopic1, conjunctiontopic2, conjunctiontopic3), pipelinekey, externalsourceid, eventtime, eventid)
 );
 
 DROP TABLE IF EXISTS events;