elasticsearch: install Java first on CentOS too

elasticsearch-oss package fails to install if we install it with Java:

INFO:kolla.common.utils.elasticsearch:could not find java; set JAVA_HOME
INFO:kolla.common.utils.elasticsearch:error: %prein(elasticsearch-oss-0:6.8.23-1.noarch) scriptlet failed, exit status 1
INFO:kolla.common.utils.elasticsearch:�[91mError in PREIN scriptlet in rpm package elasticsearch-oss

Backport down to ussuri needed.

Change-Id: I72d7920acd8d15941c8c57a4186186212b273a38
(cherry picked from commit 976465c)

docker/elasticsearch/elasticsearch/Dockerfile.j2

@@ -12,8 +12,12 @@ LABEL maintainer="{{ maintainer }}" name="{{ image_name }}" build-date="{{ build
 {{ macros.enable_extra_repos(['elasticsearch']) }}
 
 {% if base_package_type == 'rpm' %}
+
+# NOTE(hrw): post-install script of elasticsearch fails when trying to
+# install elasticsearch and java together.
+{{ macros.install_packages(['java-11-openjdk-headless']) }}
+
     {% set elasticsearch_packages = [
-        'java-11-openjdk-headless',
         'elasticsearch-oss',
     ] %}