CentOS: fix failing repository on aarch64 (arm64)

This repository is only specified in the aarch64 (arm64) images,
and therefore was not caught in CI.

Bringing back the fix that was previously there, to prevent failures:

    #9 [stage-1 4/6] RUN yum-builddep -y /root/rpmbuild/SPECS/*.spec
    #9 0.982 Loaded plugins: fastestmirror, ovl
    #9 1.177 Enabling base-source repository
    #9 1.177 Enabling extras-source repository
    #9 1.178 Enabling updates-source repository
    #9 1.179 Loading mirror speeds from cached hostfile
    #9 1.181  * base: d36uatko69830t.cloudfront.net
    #9 1.182  * extras: d36uatko69830t.cloudfront.net
    #9 1.182  * updates: d36uatko69830t.cloudfront.net
    #9 2.272 http://vault.centos.org/altarch/7/extras/Source/repodata/repomd.xml: [Errno 14] HTTP Error 404 - Not Found
    #9 2.272 Trying other mirror.
    #9 2.273 To address this issue please refer to the below wiki article

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
(cherry picked from commit 170199f)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Upstream-commit: eae0236c6e07ab7d29c8d0cf4a56265d5f1afc48
Component: packaging

Author: thaJeztah

components/packaging/rpm/centos-7/Dockerfile

@@ -17,6 +17,10 @@ ARG DISTRO
 ARG SUITE
 ENV DISTRO=${DISTRO}
 ENV SUITE=${SUITE}
+
+# In aarch64 (arm64) images, the altarch repo is specified as repository, but
+# failing, so replace the URL.
+RUN if [ -f /etc/yum.repos.d/CentOS-Sources.repo ]; then sed -i 's/altarch/centos/g' /etc/yum.repos.d/CentOS-Sources.repo; fi
 RUN yum install -y rpm-build rpmlint
 COPY SPECS /root/rpmbuild/SPECS
 RUN yum-builddep -y /root/rpmbuild/SPECS/*.spec

components/packaging/rpm/centos-8/Dockerfile

@@ -17,6 +17,10 @@ ARG DISTRO
 ARG SUITE
 ENV DISTRO=${DISTRO}
 ENV SUITE=${SUITE}
+
+# In aarch64 (arm64) images, the altarch repo is specified as repository, but
+# failing, so replace the URL.
+RUN if [ -f /etc/yum.repos.d/CentOS-Sources.repo ]; then sed -i 's/altarch/centos/g' /etc/yum.repos.d/CentOS-Sources.repo; fi
 RUN yum install -y rpm-build rpmlint yum-utils
 RUN yum-config-manager --set-enabled PowerTools
 COPY SPECS /root/rpmbuild/SPECS