uncomment couple of lines that set heap for travis run

integration.sh

@@ -8,8 +8,8 @@ function run_tests() {
 
 	ccm create test -v binary:$version -n $clusterSize -d --vnodes
 	
-	#sed -i '/#MAX_HEAP_SIZE/c\MAX_HEAP_SIZE="256M"' ~/.ccm/repository/$version/conf/cassandra-env.sh
-	#sed -i '/#HEAP_NEWSIZE/c\HEAP_NEWSIZE="100M"' ~/.ccm/repository/$version/conf/cassandra-env.sh
+	sed -i '/#MAX_HEAP_SIZE/c\MAX_HEAP_SIZE="256M"' ~/.ccm/repository/$version/conf/cassandra-env.sh
+	sed -i '/#HEAP_NEWSIZE/c\HEAP_NEWSIZE="100M"' ~/.ccm/repository/$version/conf/cassandra-env.sh
 
 	ccm updateconf 'concurrent_reads: 2' 'concurrent_writes: 2' 'rpc_server_type: sync' 'rpc_min_threads: 2' 'rpc_max_threads: 2' 'write_request_timeout_in_ms: 5000' 'read_request_timeout_in_ms: 5000'
 	ccm start