rabbitmq/aarch64: use COPR for Erlang

RabbitMQ team maintains RPM package in Github repo [1]. Hrw then use it
to build package using COPR service [2].

This way we have latest Erlang on both distributions and both
architectures.

1. https://github.com/rabbitmq/erlang-rpm/
2. https://copr.fedorainfracloud.org/coprs/hrw/erlang-for-rabbitmq/

(manual cherry-pick from master commit
e104ef7)

Change-Id: I6a6a9c3d5ffff884fc61baeafcc46ad82afc3db3

Author: Marcin Juszkiewicz

docker/base/Dockerfile.j2

@@ -99,7 +99,7 @@ COPY dnf.conf /etc/dnf/dnf.conf
     ] %}
 {% elif base_arch == 'aarch64' %}
     {% set base_yum_repo_files = base_yum_repo_files + [
-        'erlang-solutions.repo',
+        'hrw-copr-erlang-for-rabbitmq.repo',
         'mariadb-aarch64.repo',
     ] %}
 

docker/base/erlang-solutions.repo

@@ -0,0 +1,11 @@
+# NOTE(hrw): this repository contains rebuild of Erlang package from RabbitMQ team
+# from https://github.com/rabbitmq/erlang-rpm/
+# Thanks to COPR we have aarch64 packages for CentOS Stream 8/9
+
+[copr-hrw-erlang-for-rabbitmq]
+name=Hrw's COPR with Erlang build for RabbitMQ
+baseurl=https://download.copr.fedorainfracloud.org/results/hrw/erlang-for-rabbitmq/centos-stream-$releasever-$basearch/
+gpgcheck=1
+enabled=0
+gpgkey=https://download.copr.fedorainfracloud.org/results/hrw/erlang-for-rabbitmq/pubkey.gpg
+repo_gpgcheck=0

docker/base/hrw-copr-erlang-for-rabbitmq.repo

@@ -25,7 +25,7 @@ centos-aarch64:
   elasticsearch: "elasticsearch-kibana-logstash-7.x"
   epel: "epel"
   epel-modular: "epel-modular"
-  erlang: "erlang-solutions"
+  erlang: "copr-hrw-erlang-for-rabbitmq"
   extras: "extras"
   grafana: "grafana"
   hacluster: "ha"