Don't import Id/Key/NameKey directly

Found all instances matching this regular expression:

  git grep -E "^import.*client.*\.(Id|Key|NameKey);$"

Change-Id: I890d6d84feac76e0edccf25583b13074dc2a48c4
diff --git a/src/main/java/com/googlesource/gerrit/plugins/multisite/validation/MultiSiteGitRepositoryManager.java b/src/main/java/com/googlesource/gerrit/plugins/multisite/validation/MultiSiteGitRepositoryManager.java
index f609c49..8ce1f59 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/multisite/validation/MultiSiteGitRepositoryManager.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/multisite/validation/MultiSiteGitRepositoryManager.java
@@ -14,7 +14,7 @@
 
 package com.googlesource.gerrit.plugins.multisite.validation;
 
-import com.google.gerrit.reviewdb.client.Project.NameKey;
+import com.google.gerrit.reviewdb.client.Project;
 import com.google.gerrit.server.git.GitRepositoryManager;
 import com.google.gerrit.server.git.LocalDiskRepositoryManager;
 import com.google.gerrit.server.git.RepositoryCaseMismatchException;
@@ -39,22 +39,23 @@
   }
 
   @Override
-  public Repository openRepository(NameKey name) throws RepositoryNotFoundException, IOException {
+  public Repository openRepository(Project.NameKey name)
+      throws RepositoryNotFoundException, IOException {
     return wrap(name, gitRepositoryManager.openRepository(name));
   }
 
   @Override
-  public Repository createRepository(NameKey name)
+  public Repository createRepository(Project.NameKey name)
       throws RepositoryCaseMismatchException, RepositoryNotFoundException, IOException {
     return wrap(name, gitRepositoryManager.createRepository(name));
   }
 
   @Override
-  public SortedSet<NameKey> list() {
+  public SortedSet<Project.NameKey> list() {
     return gitRepositoryManager.list();
   }
 
-  private Repository wrap(NameKey projectName, Repository projectRepo) {
+  private Repository wrap(Project.NameKey projectName, Repository projectRepo) {
     return multiSiteRepoFactory.create(projectName.get(), projectRepo);
   }
 }
diff --git a/src/test/java/com/googlesource/gerrit/plugins/multisite/validation/dfsrefdb/zookeeper/RefFixture.java b/src/test/java/com/googlesource/gerrit/plugins/multisite/validation/dfsrefdb/zookeeper/RefFixture.java
index 126efa1..72ea236 100644
--- a/src/test/java/com/googlesource/gerrit/plugins/multisite/validation/dfsrefdb/zookeeper/RefFixture.java
+++ b/src/test/java/com/googlesource/gerrit/plugins/multisite/validation/dfsrefdb/zookeeper/RefFixture.java
@@ -14,7 +14,7 @@
 
 package com.googlesource.gerrit.plugins.multisite.validation.dfsrefdb.zookeeper;
 
-import com.google.gerrit.reviewdb.client.Project.NameKey;
+import com.google.gerrit.reviewdb.client.Project;
 import com.google.gerrit.reviewdb.client.RefNames;
 import org.eclipse.jgit.lib.ObjectId;
 import org.junit.Ignore;
@@ -27,7 +27,7 @@
   static final String ALLOWED_NAME_CHARS =
       ALLOWED_CHARS + ALLOWED_CHARS.toUpperCase() + ALLOWED_DIGITS;
   static final String A_TEST_PROJECT_NAME = "A_TEST_PROJECT_NAME";
-  static final NameKey A_TEST_PROJECT_NAME_KEY = new NameKey(A_TEST_PROJECT_NAME);
+  static final Project.NameKey A_TEST_PROJECT_NAME_KEY = new Project.NameKey(A_TEST_PROJECT_NAME);
   static final ObjectId AN_OBJECT_ID_1 = new ObjectId(1, 2, 3, 4, 5);
   static final ObjectId AN_OBJECT_ID_2 = new ObjectId(1, 2, 3, 4, 6);
   static final ObjectId AN_OBJECT_ID_3 = new ObjectId(1, 2, 3, 4, 7);