Align to Gerrit 2.10.6 API

Gerrit 2.10-SNAPSHOT is not available anymore: it is much better
to use the latest released Ver. 2.10.6, including the JGit fixes
on the RevWalk.close()

Change-Id: I156cb57a89d7436b98423163b2e51e60a5e846e5
diff --git a/pom.xml b/pom.xml
index f48abf5..27d8e2b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -26,7 +26,7 @@
 
   <properties>
     <Gerrit-ApiType>plugin</Gerrit-ApiType>
-    <Gerrit-ApiVersion>2.10-SNAPSHOT</Gerrit-ApiVersion>
+    <Gerrit-ApiVersion>2.10.6</Gerrit-ApiVersion>
   </properties>
 
   <build>
@@ -127,10 +127,6 @@
 
   <repositories>
     <repository>
-      <id>gerrit-api-repository</id>
-      <url>https://gerrit-api.storage.googleapis.com/snapshot/</url>
-    </repository>
-    <repository>
       <id>gerrit-maven-repository</id>
       <url>https://gerrit-maven.storage.googleapis.com</url>
     </repository>
diff --git a/src/main/java/com/googlesource/gerrit/plugins/imagare/DeleteImage.java b/src/main/java/com/googlesource/gerrit/plugins/imagare/DeleteImage.java
index 675c99d..ac875e3 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/imagare/DeleteImage.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/imagare/DeleteImage.java
@@ -128,7 +128,7 @@
         throw new AuthException("not allowed to delete image");
       }
     } finally {
-      rw.release();
+      rw.close();
     }
   }
 
diff --git a/src/main/java/com/googlesource/gerrit/plugins/imagare/ImageServlet.java b/src/main/java/com/googlesource/gerrit/plugins/imagare/ImageServlet.java
index 7396b9b..77ed585 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/imagare/ImageServlet.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/imagare/ImageServlet.java
@@ -141,7 +141,7 @@
               return;
             }
           } finally {
-            rw.release();
+            rw.close();
           }
         }
 
@@ -191,13 +191,13 @@
             send(req, res, content, mimeType.toString(), commit.getCommitTime());
             return;
           } finally {
-            tw.release();
+            tw.close();
           }
         } catch (IOException e) {
           notFound(res);
           return;
         } finally {
-          rw.release();
+          rw.close();
         }
       } finally {
         repo.close();
diff --git a/src/main/java/com/googlesource/gerrit/plugins/imagare/PostImage.java b/src/main/java/com/googlesource/gerrit/plugins/imagare/PostImage.java
index de6d0da..72c4207 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/imagare/PostImage.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/imagare/PostImage.java
@@ -214,11 +214,11 @@
 
           return getUrl(pc.getProject().getNameKey(), ref, fileName);
         } finally {
-          oi.release();
+          oi.close();
         }
 
       } finally {
-        rw.release();
+        rw.close();
       }
     } finally {
       repo.close();