Mark helm-repository unbuildable

The chart repository is gone and the building fails.

Change-Id: I205eb2209cb0ccaecee247b95c65ed65bf4ed9e0

doc/source/matrix_aarch64.csv

@@ -31,7 +31,7 @@ grafana,C,C,C,C,N,C
 hacluster,N,N,C,C,N,C
 haproxy,C,C,C,C,N,C
 heat,C,C,C,C,N,C
-helm-repository (deprecated),C,C,C,C,N,C
+helm-repository (deprecated),N,N,N,N,N,N
 horizon,C,C,C,C,N,C
 influxdb,N,N,C,C,N,C
 ironic,C,C,C,C,N,C

doc/source/matrix_x86.csv

@@ -33,7 +33,7 @@ hacluster,C,C,C,C,C,C,N,C
 hacluster-pcs,C,C,N,N,C,C,N,C
 haproxy,T,T,T,T,T,T,N,C
 heat,T,T,T,T,N,T,N,T
-helm-repository (deprecated),C,C,N,N,C,C,N,C
+helm-repository (deprecated),N,N,N,N,N,N,N,N
 horizon,T,T,T,T,T,T,N,T
 influxdb,C,C,C,C,C,C,N,C
 ironic,T,T,T,T,C,T,N,C

kolla/image/build.py

@@ -104,6 +104,7 @@ UNBUILDABLE_IMAGES = {
     },
 
     'source': {
+        "helm-repository",   # chart repository is gone
         "kuryr-libnetwork",  # Could not find a version that satisfies the
                              # requirement jsonschema>=2.6.0,<3.0.0
         "tripleoclient",
@@ -115,6 +116,7 @@ UNBUILDABLE_IMAGES = {
         "cyborg-base",
         "dragonflow-base",
         "freezer-base",
+        "helm-repository",   # chart repository is gone
         "karbor-base",
         "kuryr-base",
         "masakari-base",

releasenotes/notes/unbuildable-helm-repository-5e361266659b29d1.yaml

@@ -0,0 +1,6 @@
+---
+upgrade:
+  - |
+    ``helm-repository`` image is now unbuildable due to the chart repository
+    being gone. The image was deprecated and is not known to be used by
+    any tooling.