epel renames its source repositories

[Scott Little]

Brief Description
-----------------
download_mirror.sh fails with

failure: repodata/repomd.xml from Starlingx-epel-7-source: [Errno 256] No more mirrors to try.
https://dl.fedoraproject.org/pub/epel/7/SRPMS/repodata/repomd.xml: [Errno 14] HTTPS Error 404 - Not Found

Severity
--------
Critical

Steps to Reproduce
------------------
modify an lst file to ask for a new EPEL provided src.rpm
download_mirror.sh

Expected Behavior
------------------
src.rpm is downloaded

Actual Behavior
----------------
fails to download

Reproducibility
---------------
100% if src.rpm is not cached and not found elsewhere.

System Configuration
--------------------
N/A

Branch/Pull Time/Commit
-----------------------
June 30, 2021

Last Pass
---------
June 28, 2021

Timestamp/Logs
--------------
failure: repodata/repomd.xml from Starlingx-epel-7-source: [Errno 256] No more mirrors to try.
https://dl.fedoraproject.org/pub/epel/7/SRPMS/repodata/repomd.xml: [Errno 14] HTTPS Error 404 - Not Found

b5: Looking for linuxptp-2.0-2.el7.src.rpm
b5: --> run: yumdownloader -q -C -c /tmp/stx_mirror_qflVxd/yum.conf --releasever=7 --source linuxptp-2.0-2.el7
b5: Caching enabled but no local cache of /tmp/stx_mirror_qflVxd/cache/yum/x86_64/7/CENGN_StarlingX-C7.6.1810-atomic/f34a06abc50a0242beac01615029a633b03163bd1ed1ccb00640225ac1bced27-primary.sqlite.bz2 from CENGN_StarlingX-C7.6.1810-atomic
b5: Warning: linuxptp-2.0-2.el7.src.rpm not found

Test Activity
-------------
Build

Workaround
----------
manual download

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/c/starlingx/tools/+/798921

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/starlingx/tools/+/798949
Committed: https://opendev.org/starlingx/tools/commit/0f8680cf14a2cea61ef2ec6405b93380e2b51dc0
Submitter: "Zuul (22348)"
Branch: master

commit 0f8680cf14a2cea61ef2ec6405b93380e2b51dc0
Author: Davlet Panech <email address hidden>
Date: Wed Jun 30 15:25:53 2021 -0400

    Update EPEL source repo URLs

    EPEL has changed the path to it's source repositories
    from 'SRPM' to 'source/tree'

    Change-Id: Icbe0daf5c9c47751533a470dc5152cdf0300518d
    Closes-Bug: 1934167
    Signed-off-by: Davlet Panech <email address hidden>

[OpenStack Infra (hudson-openstack)]

Change abandoned by "Scott Little <email address hidden>" on branch: master
Review: https://review.opendev.org/c/starlingx/tools/+/798921