Merge branch 'stable-3.1' into stable-3.2

Update Docker image to 3.2.6 to match plugin API for build.

* stable-3.1: (25 commits)
  Match Bazel version from core
  fixup! test/docker: Use gerritcodereview docker image
  Add counts to Task headers
  Task UI: Add links to see full view of all tasks
  Add Bazel support for running docker tests
  test/docker: Use gerritcodereview docker image
  Revert "plugin:task Adds support for names-factory of type change"
  Remove Maven build
  Task UI: Add status icons
  TaskAttributeFactory: Consistently cache predicates
  task: Remove unthrown exception
  TaskAttributeFactory turn more Exceptions into INVALID tasks
  plugin:task Adds support for names-factory of type change
  Add support for tasks-factory and names-factory keywords
  task plugin tests: handle missing refs/users/self
  Task UI In Progress
  Refactor docker test setup
  Use a shorter docker test script name
  Upgrade bazlets to latest stable-3.1 to build with 3.1.12 API
  Support to run shell script tests in docker environment
  ...

Change-Id: I71b2f67032e41b82904809acc90752f58e9b5793
diff --git a/BUILD b/BUILD
index b2b57ae..2d5b47e 100644
--- a/BUILD
+++ b/BUILD
@@ -13,7 +13,7 @@
     srcs = glob(["src/main/java/**/*.java"]),
     manifest_entries = [
         "Gerrit-PluginName: " + plugin_name,
-        "Gerrit-ApiVersion: 3.1.12",
+        "Gerrit-ApiVersion: 3.2.6",
         "Implementation-Title: Task Plugin",
         "Implementation-URL: https://gerrit-review.googlesource.com/#/admin/projects/plugins/" + plugin_name,
         "Gerrit-Module: com.googlesource.gerrit.plugins.task.Modules$Module",
diff --git a/WORKSPACE b/WORKSPACE
index b43b624..33921c1 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -3,7 +3,7 @@
 load("//:bazlets.bzl", "load_bazlets")
 
 load_bazlets(
-    commit = "87fd5f0d0a89d01df13deaf2d21a4bdb3bc03cfd",
+    commit = "8dc0767541f16b35d2136eccebffd9ebe2b81133",
     #local_path = "/home/<user>/projects/bazlets",
 )
 
diff --git a/test/docker/gerrit/Dockerfile b/test/docker/gerrit/Dockerfile
index 041e1dd..780970c 100755
--- a/test/docker/gerrit/Dockerfile
+++ b/test/docker/gerrit/Dockerfile
@@ -1,4 +1,4 @@
-FROM gerritcodereview/gerrit:3.1.12-ubuntu18
+FROM gerritcodereview/gerrit:3.2.6-ubuntu20
 
 USER root