SLES/OpenSUSE - build 15.5 and then install/upgrade test to later

This keep our packages list smaller, less building, and works for 15.5 and 15.6

Factor the generation of lists together as what should be identical
implementation. There should be only one match in the list.

constants.py

@@ -168,14 +168,16 @@
     "amd64-debian-12-debug-embedded",
     "amd64-fedora-40",
     "amd64-fedora-41",
-    "amd64-opensuse-1506",
-    "amd64-sles-1506",
     "amd64-ubuntu-2404",
     "ppc64le-ubuntu-2404",
-    "s390x-sles-1506",
     "s390x-ubuntu-2404",
     "ppc64le-debian-12",
 ]
+# For 10.11 when 1505 goes EOL
+#   "amd64-opensuse-1506",
+#   "amd64-sles-1506",
+#   "s390x-sles-1506",
+
 supportedPlatforms["10.11"] += supportedPlatforms["10.10"]
 
 supportedPlatforms["11.0"] = supportedPlatforms["10.11"].copy()

os_info.yaml

@@ -81,6 +81,7 @@ opensuse-1506:
   arch:
     - amd64
   type: rpm
+  install_only: True
 rhel-7:
   version_name: 7
   arch:
@@ -123,14 +124,15 @@ sles-1505:
   version_name: 15.5
   arch:
     - amd64
-# TEMP - currently short on hardware - s390x
+    - s390x
   type: rpm
 sles-1506:
   version_name: 15.6
   arch:
     - amd64
     - s390x
   type: rpm
+  install_only: True
 ubuntu-2004:
   version_name: focal
   arch:

schedulers_definition.py

@@ -54,32 +54,32 @@ def getBigtestBuilderNames(props):
     return []
 
 
-@util.renderer
-def getInstallBuilderNames(props):
-    builderName = str(props.getProperty("parentbuildername"))
-
-    for b in builders_install:
+def getBuilderNames(builderName, builders_list):
+    builders = []
+    for b in builders_list:
         if builderName in b:
-            builders = [b]
+            builders.append(b)
             if "rhel" in builderName:
                 builders.append(b.replace("rhel", "almalinux"))
                 builders.append(b.replace("rhel", "rockylinux"))
-            return builders
-    return []
+            if "sles-1505" in builderName or "opensuse-1505" in builderName:
+                builders.append(b.replace("1505", "1506"))
+            break
+    return builders
+
+
+@util.renderer
+def getInstallBuilderNames(props):
+    builderName = str(props.getProperty("parentbuildername"))
+
+    return getBuilderNames(builderName, builders_install)
 
 
 @util.renderer
 def getUpgradeBuilderNames(props):
     builderName = str(props.getProperty("parentbuildername"))
 
-    builds = []
-    for b in builders_upgrade:
-        if builderName in b:
-            if "rhel" in builderName:
-                builds.append(b.replace("rhel", "almalinux"))
-                builds.append(b.replace("rhel", "rockylinux"))
-            builds.append(b)
-    return builds
+    return getBuilderNames(builderName, builders_upgrade)
 
 
 @util.renderer