Correct atomix version in features.xml and pom.xml

Change-Id: I416da6b7d11e1b1e0c27c6ce15428e978d2fccd1
diff --git a/core/store/primitives/pom.xml b/core/store/primitives/pom.xml
index e002bd7..f3345b1 100644
--- a/core/store/primitives/pom.xml
+++ b/core/store/primitives/pom.xml
@@ -71,7 +71,7 @@
         <dependency>
             <groupId>io.atomix</groupId>
             <artifactId>atomix</artifactId>
-            <version>1.0.0-rc7</version>
+            <version>1.0.0-rc8</version>
         </dependency>
     </dependencies>
 </project>