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

Change-Id: I3ade52ff15b3114f5748ab3151c02c8c74af38f0
diff --git a/core/common/src/test/java/org/onosproject/codec/impl/FlowRuleCodecTest.java b/core/common/src/test/java/org/onosproject/codec/impl/FlowRuleCodecTest.java
index f6a9213..c2f4ccf 100644
--- a/core/common/src/test/java/org/onosproject/codec/impl/FlowRuleCodecTest.java
+++ b/core/common/src/test/java/org/onosproject/codec/impl/FlowRuleCodecTest.java
@@ -541,7 +541,7 @@
                 is(80));
 
        assertThat(((OduSignalIdCriterion) criterion).oduSignalId().tributarySlotBitmap(),
-                is(new byte [] {1, 1, 1, 1, 1, 1, 1, 1, 1, 1}));
+                is(new byte[] {1, 1, 1, 1, 1, 1, 1, 1, 1, 1}));
     }
 
     /**