[ONOS-6401] Bump Atomix dependency version to 1.0.8 for performance regression fixes

Change-Id: I925e421f752e97b9aefcb651f72e856fd5c91741
diff --git a/features/features.xml b/features/features.xml
index 3a4bf14..2dfb2f2 100644
--- a/features/features.xml
+++ b/features/features.xml
@@ -57,7 +57,7 @@
         <bundle>mvn:com.typesafe/config/1.2.1</bundle>
         <bundle>mvn:com.googlecode.concurrent-trees/concurrent-trees/2.6.0</bundle>
         <bundle>mvn:commons-io/commons-io/2.4</bundle>
-        <bundle>mvn:io.atomix/atomix-all/1.0.7</bundle>
+        <bundle>mvn:io.atomix/atomix-all/1.0.8</bundle>
 
         <bundle>mvn:org.glassfish.jersey.core/jersey-client/2.25.1</bundle>