Merge branch 'stable-3.0' into stable-3.1

* stable-3.0:
  Set Gerrit to 3.0.10
  Set Gerrit to 2.16.21
  Set Gerrit to 2.15.19
  Fetch plugins from archive-ci.gerritforge.com
  Set Gerrit to 2.14.21
  Set version to 2.16.20

Change-Id: Iaeb6d7d2e4d51a560b80483320f4ebd1cc8a2ec9
diff --git a/fpm/Makefile b/fpm/Makefile
index 175af5d..cf9eeea 100644
--- a/fpm/Makefile
+++ b/fpm/Makefile
@@ -1,5 +1,5 @@
-VERSION=3.0.10
-WAR_VERSION=3.0.10
+VERSION=3.1.5
+WAR_VERSION=3.1.5
 URL=https://gerrit-releases.storage.googleapis.com/gerrit-$(WAR_VERSION).war
 CI_URL=https://gerrit-ci.gerritforge.com
 RELEASE=1
@@ -22,10 +22,10 @@
 WAR=$(BUILD_ROOT)/bin/gerrit.war
 PLUGINS_CI=https://gerrit-ci.gerritforge.com/job
 LIBS_JOBS= \
-  plugin-out-of-the-box-bazel-master-stable-3.0/lastSuccessfulBuild/artifact/bazel-bin/plugins/out-of-the-box/out-of-the-box.jar
+  plugin-out-of-the-box-bazel-master-stable-3.1/lastSuccessfulBuild/artifact/bazel-bin/plugins/out-of-the-box/out-of-the-box.jar
 PLUGINS_JOBS= \
-  plugin-avatars-gravatar-bazel-master-stable-3.0/lastSuccessfulBuild/artifact/bazel-bin/plugins/avatars-gravatar/avatars-gravatar.jar \
-  plugin-uploadvalidator-bazel-stable-3.0/lastSuccessfulBuild/artifact/bazel-bin/plugins/uploadvalidator/uploadvalidator.jar
+  plugin-avatars-gravatar-bazel-master-stable-3.1/lastSuccessfulBuild/artifact/bazel-bin/plugins/avatars-gravatar/avatars-gravatar.jar \
+  plugin-uploadvalidator-bazel-stable-3.1/lastSuccessfulBuild/artifact/bazel-bin/plugins/uploadvalidator/uploadvalidator.jar
 
 RPM_OUT=$(OUT)/gerrit-$(VERSION)-$(RELEASE).$(BUILD_ARCH).rpm
 DEB_OUT=$(OUT)/gerrit-$(VERSION)-$(RELEASE).$(BUILD_ARCH).deb
diff --git a/macOS/Makefile b/macOS/Makefile
index f719ccc..cd396c6 100644
--- a/macOS/Makefile
+++ b/macOS/Makefile
@@ -1,4 +1,4 @@
-VERSION := 3.0.10
+VERSION := 3.1.5
 
 all: server