Use plain HTTP repositories for SLES16 (#1688)

## Problem

- Accessing the HTTPS repositories fails with `Error message: SSL
certificate problem: unable to get local issuer certificate` because the
server uses the SUSE internal CA, not known by default.


## Solution

- Use plain HTTP repositories
- It is safe as the repository is GPG checked and you neeed VPN to reach
the internal server anyway.
- For production URLs later we should use HTTPS

products.d/agama-products.changes

@@ -1,3 +1,10 @@
+-------------------------------------------------------------------
+Tue Oct 22 08:41:14 UTC 2024 - Ladislav Slezák <lslezak@suse.com>
+
+- Use HTTP repositories for SLES16, HTTPS does not work because
+  of the internal SUSE CA used for the server SSL certificate
+  (gh#agama-project/agama#1688)
+
 -------------------------------------------------------------------
 Tru Oct 17 21:58:46 UTC 2024 - WesfunOfficial <93811710+WesfunOfficial@users.noreply.github.com>
 

products.d/sles_160.yaml

@@ -47,13 +47,16 @@ translations:
       bulutta ve uçta iş açısından kritik iş yüklerini çalıştırır.
 software:
   installation_repositories:
+    # Use plain HTTP repositories, HTTPS does not work without importing the SSL
+    # certificate. It is safe as the repository is GPG checked and you neeed VPN
+    # to reach the internal server anyway.
     - url: http://download.suse.de/ibs/SUSE:/SLFO:/Products:/SLES:/16.0:/TEST/product/repo/SLES-Packages-16.0-x86_64/
       archs: x86_64
     - url: http://download.suse.de/ibs/SUSE:/SLFO:/Products:/SLES:/16.0:/TEST/product/repo/SLES-Packages-16.0-aarch64/
       archs: aarch64
-    - url: https://download.suse.de/ibs/SUSE:/SLFO:/Products:/SLES:/16.0:/TEST/product/repo/SLES-Packages-16.0-ppc64le/
+    - url: http://download.suse.de/ibs/SUSE:/SLFO:/Products:/SLES:/16.0:/TEST/product/repo/SLES-Packages-16.0-ppc64le/
       archs: ppc
-    - url: https://download.suse.de/ibs/SUSE:/SLFO:/Products:/SLES:/16.0:/TEST/product/repo/SLES-Packages-16.0-s390x/
+    - url: http://download.suse.de/ibs/SUSE:/SLFO:/Products:/SLES:/16.0:/TEST/product/repo/SLES-Packages-16.0-s390x/
       archs: s390
 
   mandatory_patterns: