[ONOS-3737] Bump up checkstyle version from 2.16 to 2.17 with some compilation fixes

Change-Id: I3ade52ff15b3114f5748ab3151c02c8c74af38f0
diff --git a/core/store/dist/src/main/java/org/onosproject/store/device/impl/GossipDeviceStore.java b/core/store/dist/src/main/java/org/onosproject/store/device/impl/GossipDeviceStore.java
index 03e28f1..14648a5 100644
--- a/core/store/dist/src/main/java/org/onosproject/store/device/impl/GossipDeviceStore.java
+++ b/core/store/dist/src/main/java/org/onosproject/store/device/impl/GossipDeviceStore.java
@@ -439,8 +439,7 @@
             if (!replaced) {
                 verify(replaced,
                        "Replacing devices cache failed. PID:%s [expected:%s, found:%s, new=%s]",
-                       providerId, oldDevice, devices.get(newDevice.id())
-                        , newDevice);
+                       providerId, oldDevice, devices.get(newDevice.id()), newDevice);
             }
 
             event = new DeviceEvent(DeviceEvent.Type.DEVICE_UPDATED, newDevice, null);
diff --git a/core/store/dist/src/main/java/org/onosproject/store/link/impl/ECLinkStore.java b/core/store/dist/src/main/java/org/onosproject/store/link/impl/ECLinkStore.java
index 3d3ff9a..13e9174 100644
--- a/core/store/dist/src/main/java/org/onosproject/store/link/impl/ECLinkStore.java
+++ b/core/store/dist/src/main/java/org/onosproject/store/link/impl/ECLinkStore.java
@@ -215,7 +215,7 @@
             if (internalLinkKey == null) {
                 return null;
             }
-            linkDescriptions.compute(internalLinkKey, (k, v) -> createOrUpdateLinkInternal(v  , linkDescription));
+            linkDescriptions.compute(internalLinkKey, (k, v) -> createOrUpdateLinkInternal(v, linkDescription));
             return refreshLinkCache(linkKey);
         } else {
             // Only forward for ConfigProvider