Avoid casting RepositoryManager to LocalDiskRepositoryManager

Inject directly the expected class of LocalDiskRepositoryManager
without assuming that the one provided by the AbstractDaemonTest.

The Change I8d288fa3 will replace the repository manager
with a wrapping repository tracking system, therefore the casting
may not be satisfied anymore and it may fail at runtime.

Release-Notes: skip
Change-Id: I8e410ae6a489b1127ef09d4c203ab9aa1d711d8d

src/test/java/com/googlesource/gerrit/plugins/replication/ReplicationDaemon.java

diff --git a/src/test/java/com/googlesource/gerrit/plugins/replication/ReplicationDaemon.java b/src/test/java/com/googlesource/gerrit/plugins/replication/ReplicationDaemon.java
index ba4a958..f7af631 100644
--- a/src/test/java/com/googlesource/gerrit/plugins/replication/ReplicationDaemon.java
+++ b/src/test/java/com/googlesource/gerrit/plugins/replication/ReplicationDaemon.java
@@ -70,6 +70,7 @@
 
   @Inject protected SitePaths sitePaths;
   @Inject private ProjectOperations projectOperations;
+  @Inject private LocalDiskRepositoryManager localDiskRepositoryManager;
   protected Path gitPath;
   protected FileBasedConfig config;
 
@@ -79,7 +80,7 @@
   }
 
   protected String getProjectUri(Project.NameKey project) throws Exception {
-    return ((LocalDiskRepositoryManager) repoManager)
+    return localDiskRepositoryManager
         .getBasePath(project)
         .resolve(project.get() + ".git")
         .toString();