Fixes Triggers release pipeline and tasks

Fix `ko resolve` step in `publish-tekton-triggers` task

Fix `koparse` error

```
Expected images did not match: Images ['gcr.io/tekton-nightly/github.com/tektoncd/triggers/cmd/binding-eval:v20210331-6cc9094a8a', 'gcr.io/tekton-nightly/github.com/tektoncd/triggers/cmd/triggerrun:v20210331-6cc9094a8a', 'gcr.io/tekton-nightly/github.com/tektoncd/triggers/cmd/interceptors:v20210331-6cc9094a8a'] were expected but missing.
```

Tested by running a nightly release: https://dashboard.dogfooding.tekton.dev/#/namespaces/tekton-nightly/pipelineruns/triggers-release-nightly-vp46d?pipelineTask=git-clone&step=clone

Signed-off-by: Nikhil Thomas <[email protected]>

tekton/publish.yaml

@@ -8,8 +8,11 @@ spec:
     description: package to release (e.g. github.com/<org>/<project>)
     default: github.com/tektoncd/triggers
   - name: images
-    description: List of cmd/* paths to be published as images
-    default: "binding-eval controller eventlistenersink interceptors triggerrun webhook"
+    description: List of cmd/* paths to be published as images  in release manifest release.yaml
+    default: "controller eventlistenersink webhook"
+  - name: interceptorImages
+    description: List of cmd/* paths to be published as images in release manifest interceptors.yaml
+    default: "interceptors"
   - name: versionTag
     description: The vX.Y.Z version that the artifacts should be tagged with (including `v`)
   - name: imageRegistry
@@ -110,16 +113,18 @@ spec:
       done
 
       # Rewrite "devel" to params.versionTag
-      sed -i -e 's/\(pipeline.tekton.dev\/release\): "devel"/\1: "$(params.versionTag)"/g' -e 's/\(app.kubernetes.io\/version\): "devel"/\1: "$(params.versionTag)"/g' -e 's/\(version\): "devel"/\1: "$(params.versionTag)"/g' -e 's/\("-version"\), "devel"/\1, "$(params.versionTag)"/g' ${PROJECT_ROOT}/config/*.yaml
-
+      sed -i -e 's/\(triggers.tekton.dev\/release\): "devel"/\1: "$(params.versionTag)"/g' -e 's/\(app.kubernetes.io\/version\): "devel"/\1: "$(params.versionTag)"/g' -e 's/\(version\): "devel"/\1: "$(params.versionTag)"/g' ${PROJECT_ROOT}/config/*.yaml
+      sed -i -e 's/\(triggers.tekton.dev\/release\): "devel"/\1: "$(params.versionTag)"/g' -e 's/\(app.kubernetes.io\/version\): "devel"/\1: "$(params.versionTag)"/g' -e 's/\(version\): "devel"/\1: "$(params.versionTag)"/g' ${PROJECT_ROOT}/config/interceptors/*.yaml
       # Publish images and create release.yaml
       mkdir -p $OUTPUT_RELEASE_DIR
 
       ko resolve --platform=$(params.platforms) --preserve-import-paths -t $(params.versionTag) -f ${PROJECT_ROOT}/config/ > $OUTPUT_RELEASE_DIR/release.yaml
+      ko resolve --platform=$(params.platforms) --preserve-import-paths -t $(params.versionTag) -f ${PROJECT_ROOT}/config/interceptors > $OUTPUT_RELEASE_DIR/interceptors.yaml
       # Publish images and create release.notags.yaml
       # This is useful if your container runtime doesn't support the `image-reference:tag@digest` notation
       # This is currently the case for `cri-o` (and most likely others)
-      ko resolve --platform=$(params.platforms) --preserve-import-paths -f ${PROJECT_ROOT}/config/ > $OUTPUT_RELEASE_DIR/release.notags.yaml
+      ko resolve --platform=$(params.platforms) --preserve-import-paths -t $(params.versionTag) -f ${PROJECT_ROOT}/config/ > $OUTPUT_RELEASE_DIR/release.notags.yaml
+      ko resolve --platform=$(params.platforms) --preserve-import-paths -t $(params.versionTag) -f ${PROJECT_ROOT}/config/interceptors > $OUTPUT_RELEASE_DIR/interceptors.notags.yaml
 
   - name: koparse
     image: gcr.io/tekton-releases/dogfooding/koparse:latest
@@ -138,6 +143,16 @@ spec:
         --path $OUTPUT_RELEASE_DIR/release.yaml \
         --base ${IMAGES_PATH} --images ${IMAGES} > /workspace/built_images
 
+      for cmd in $(params.interceptorImages)
+      do
+        INTERCEPTOR_IMAGES="${INTERCEPTOR_IMAGES} ${IMAGES_PATH}/cmd/${cmd}:$(params.versionTag)"
+      done
+
+      # Parse the built images from the interceptor.yaml generated by ko
+      koparse \
+        --path $OUTPUT_RELEASE_DIR/interceptors.yaml \
+        --base ${IMAGES_PATH} --images ${INTERCEPTOR_IMAGES} > /workspace/built_images
+
   - name: tag-images
     image: gcr.io/go-containerregistry/crane:debug
     script: |