Adapt the plugin to recent master

Change-Id: I6d91cd8731afad99ca2577114f03d63188aa7c44
diff --git a/github-oauth/pom.xml b/github-oauth/pom.xml
index 7a45b1d..1e93dbd 100644
--- a/github-oauth/pom.xml
+++ b/github-oauth/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>com.googlesource.gerrit.plugins.github</groupId>
     <artifactId>github-parent</artifactId>
-    <version>3.3.0</version>
+    <version>3.4.0-SNAPSHOT</version>
   </parent>
   <artifactId>github-oauth</artifactId>
   <name>Gerrit Code Review - GitHub OAuth login</name>
diff --git a/github-oauth/src/main/java/com/googlesource/gerrit/plugins/github/oauth/GitHubMyselfWrapper.java b/github-oauth/src/main/java/com/googlesource/gerrit/plugins/github/oauth/GitHubMyselfWrapper.java
index 247d6a6..9bdae85 100644
--- a/github-oauth/src/main/java/com/googlesource/gerrit/plugins/github/oauth/GitHubMyselfWrapper.java
+++ b/github-oauth/src/main/java/com/googlesource/gerrit/plugins/github/oauth/GitHubMyselfWrapper.java
@@ -19,7 +19,6 @@
 import java.util.Date;
 import java.util.List;
 import java.util.Map;
-import java.util.Set;
 import org.kohsuke.github.GHEmail;
 import org.kohsuke.github.GHEventInfo;
 import org.kohsuke.github.GHGist;
diff --git a/github-plugin/pom.xml b/github-plugin/pom.xml
index 58fcd13..58bfd2c 100644
--- a/github-plugin/pom.xml
+++ b/github-plugin/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <artifactId>github-parent</artifactId>
     <groupId>com.googlesource.gerrit.plugins.github</groupId>
-    <version>3.3.0</version>
+    <version>3.4.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>github-plugin</artifactId>
@@ -135,7 +135,7 @@
     <dependency>
       <groupId>com.google.code.gson</groupId>
       <artifactId>gson</artifactId>
-      <version>2.1</version>
+      <version>2.8.6</version>
     </dependency>
     <dependency>
       <groupId>org.apache.httpcomponents</groupId>
diff --git a/github-plugin/src/main/java/com/googlesource/gerrit/plugins/github/replication/RemoteSiteUser.java b/github-plugin/src/main/java/com/googlesource/gerrit/plugins/github/replication/RemoteSiteUser.java
index 26def83..f80af85 100644
--- a/github-plugin/src/main/java/com/googlesource/gerrit/plugins/github/replication/RemoteSiteUser.java
+++ b/github-plugin/src/main/java/com/googlesource/gerrit/plugins/github/replication/RemoteSiteUser.java
@@ -35,4 +35,9 @@
   public GroupMembership getEffectiveGroups() {
     return effectiveGroups;
   }
+
+  @Override
+  public Object getCacheKey() {
+    return effectiveGroups.getKnownGroups();
+  }
 }
diff --git a/pom.xml b/pom.xml
index 0be79b3..6ab0c16 100644
--- a/pom.xml
+++ b/pom.xml
@@ -18,7 +18,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.googlesource.gerrit.plugins.github</groupId>
   <artifactId>github-parent</artifactId>
-  <version>3.3.0</version>
+  <version>3.4.0-SNAPSHOT</version>
   <name>Gerrit Code Review - GitHub integration</name>
   <url>http://www.gerritforge.com</url>
   <packaging>pom</packaging>
@@ -290,6 +290,12 @@
   </repositories>
   <dependencies>
     <dependency>
+        <groupId>com.ryanharter.auto.value</groupId>
+        <artifactId>auto-value-gson</artifactId>
+        <version>1.3.0</version>
+        <scope>provided</scope>
+    </dependency>
+    <dependency>
         <groupId>org.projectlombok</groupId>
         <artifactId>lombok</artifactId>
         <version>1.18.16</version>