Update checkstyle to version 6.19

Change-Id: I32787f2a5f4f4b17fd4cdcf9bd2eb3903dcecfff
diff --git a/apps/optical-model/src/main/java/org/onosproject/net/optical/intent/impl/compiler/OpticalCircuitIntentCompiler.java b/apps/optical-model/src/main/java/org/onosproject/net/optical/intent/impl/compiler/OpticalCircuitIntentCompiler.java
index b463ddc..a44d837 100644
--- a/apps/optical-model/src/main/java/org/onosproject/net/optical/intent/impl/compiler/OpticalCircuitIntentCompiler.java
+++ b/apps/optical-model/src/main/java/org/onosproject/net/optical/intent/impl/compiler/OpticalCircuitIntentCompiler.java
@@ -304,7 +304,7 @@
         List<Resource> tributarySlotResources = portsList.stream()
                 .flatMap(cp -> tributarySlots
                         .stream()
-                        .map(ts-> Resources.discrete(cp.deviceId(), cp.port()).resource().child(ts)))
+                        .map(ts -> Resources.discrete(cp.deviceId(), cp.port()).resource().child(ts)))
                 .collect(Collectors.toList());
 
         if (!tributarySlotResources.stream().allMatch(resourceService::isAvailable)) {
diff --git a/apps/optical-model/src/main/java/org/onosproject/net/optical/intent/impl/compiler/OpticalOduIntentCompiler.java b/apps/optical-model/src/main/java/org/onosproject/net/optical/intent/impl/compiler/OpticalOduIntentCompiler.java
index b01603f..b722285 100644
--- a/apps/optical-model/src/main/java/org/onosproject/net/optical/intent/impl/compiler/OpticalOduIntentCompiler.java
+++ b/apps/optical-model/src/main/java/org/onosproject/net/optical/intent/impl/compiler/OpticalOduIntentCompiler.java
@@ -210,7 +210,7 @@
         Set<Resource> resources = slotsMap.entrySet().stream()
                 .flatMap(x -> x.getValue()
                         .stream()
-                        .flatMap(ts-> Stream.of(
+                        .flatMap(ts -> Stream.of(
                                 Resources.discrete(x.getKey().src().deviceId(), x.getKey().src().port())
                                         .resource().child(ts),
                                 Resources.discrete(x.getKey().dst().deviceId(), x.getKey().dst().port())
@@ -386,4 +386,4 @@
                 Resources.discrete(cp.deviceId(), cp.port()).id(),
                 TributarySlot.class);
     }
-}
\ No newline at end of file
+}
diff --git a/apps/test/messaging-perf/src/main/java/org/onosproject/messagingperf/MessagingPerfApp.java b/apps/test/messaging-perf/src/main/java/org/onosproject/messagingperf/MessagingPerfApp.java
index 7d13ec5..03d4f63 100644
--- a/apps/test/messaging-perf/src/main/java/org/onosproject/messagingperf/MessagingPerfApp.java
+++ b/apps/test/messaging-perf/src/main/java/org/onosproject/messagingperf/MessagingPerfApp.java
@@ -268,7 +268,9 @@
         communicationService.<Data>addSubscriber(
                 TEST_UNICAST_MESSAGE_TOPIC,
                 decoder,
-                d -> { received.incrementAndGet(); },
+                d -> {
+                    received.incrementAndGet();
+                },
                 messageReceivingExecutor);
 
         communicationService.<Data, Data>addSubscriber(
diff --git a/apps/vtn/sfcmgr/src/main/java/org/onosproject/sfc/installer/impl/SfcFlowRuleInstallerImpl.java b/apps/vtn/sfcmgr/src/main/java/org/onosproject/sfc/installer/impl/SfcFlowRuleInstallerImpl.java
index 59329c4..52ecde6 100644
--- a/apps/vtn/sfcmgr/src/main/java/org/onosproject/sfc/installer/impl/SfcFlowRuleInstallerImpl.java
+++ b/apps/vtn/sfcmgr/src/main/java/org/onosproject/sfc/installer/impl/SfcFlowRuleInstallerImpl.java
@@ -379,7 +379,7 @@
         Set<PortNumber> ports = bridgeConfig.getPortNumbers();
         String tunnelName = "vxlan-" + DEFAULT_IP;
         ports.stream()
-        .filter(p ->p.name().equalsIgnoreCase(tunnelName))
+        .filter(p -> p.name().equalsIgnoreCase(tunnelName))
         .forEach(p -> {
             treatment.setOutput(p);
             sendSfcRule(selector, treatment, deviceId, type, TUNNEL_SEND_PRIORITY);
@@ -899,8 +899,8 @@
     private PortNumber getVxlanPortNumber(DeviceId deviceId) {
         Iterable<Port> ports = deviceService.getPorts(deviceId);
         Port vxlanPort = Sets.newHashSet(ports).stream()
-                .filter(p ->!p.number().equals(PortNumber.LOCAL))
-                .filter(p ->p.annotations().value(AnnotationKeys.PORT_NAME)
+                .filter(p -> !p.number().equals(PortNumber.LOCAL))
+                .filter(p -> p.annotations().value(AnnotationKeys.PORT_NAME)
                         .startsWith(VXLANPORT_HEAD))
                 .findFirst().get();
         return vxlanPort.number();
diff --git a/apps/vtn/sfcmgr/src/main/java/org/onosproject/sfc/manager/impl/SfcManager.java b/apps/vtn/sfcmgr/src/main/java/org/onosproject/sfc/manager/impl/SfcManager.java
index b71fec7..eb63917 100644
--- a/apps/vtn/sfcmgr/src/main/java/org/onosproject/sfc/manager/impl/SfcManager.java
+++ b/apps/vtn/sfcmgr/src/main/java/org/onosproject/sfc/manager/impl/SfcManager.java
@@ -148,11 +148,11 @@
 
         nshSpiPortChainMap = storageService.<PortChainId, Integer>eventuallyConsistentMapBuilder()
                 .withName("nshSpiPortChainMap").withSerializer(serializer)
-                .withTimestampProvider((k, v) ->new WallClockTimestamp()).build();
+                .withTimestampProvider((k, v) -> new WallClockTimestamp()).build();
 
         portChainFiveTupleMap = storageService.<PortChainId, List<FiveTuple>>eventuallyConsistentMapBuilder()
                 .withName("portChainFiveTupleMap").withSerializer(serializer)
-                .withTimestampProvider((k, v) ->new WallClockTimestamp()).build();
+                .withTimestampProvider((k, v) -> new WallClockTimestamp()).build();
 
         nshSpiIdFreeList = storageService.<Integer>setBuilder()
                 .withName("nshSpiIdDeletedList")