pipelines deploy: oss acceptance test for yaml file (#3313)

## Changes
Add acceptance test for raising an error for oss pipeline YAML files. 

Follows #3312

Author: alyssa-db

acceptance/pipelines/deploy/oss-spark-error/databricks.yml

@@ -0,0 +1,5 @@
+bundle:
+  name: test-oss-warning
+
+include:
+  - ./*.yml

acceptance/pipelines/deploy/oss-spark-error/oss-pipeline.yml

@@ -0,0 +1,5 @@
+definitions:
+  - glob:
+      include: transformations/**/*.py
+  - glob:
+      include: transformations/**/*.sql

acceptance/pipelines/deploy/oss-spark-error/out.test.toml

@@ -0,0 +1,5 @@
+Local = true
+Cloud = false
+
+[EnvMatrix]
+  DATABRICKS_CLI_DEPLOYMENT = ["terraform", "direct-exp"]

acceptance/pipelines/deploy/oss-spark-error/output.txt

@@ -0,0 +1,11 @@
+
+=== Fail to deploy OSS Spark pipelines-formatted YAML file
+>>> musterr [PIPELINES] deploy
+Warning: unknown field: definitions
+  in oss-pipeline.yml:1:1
+
+Error: oss-pipeline.yml seems to be formatted for open-source Spark Declarative Pipelines.
+Pipelines CLI currently only supports Lakeflow Declarative Pipelines development.
+To see an example of a supported pipelines template, create a new Pipelines CLI project with "pipelines init".
+
+Exit code (musterr): 1

acceptance/pipelines/deploy/oss-spark-error/script

@@ -0,0 +1,2 @@
+title "Fail to deploy OSS Spark pipelines-formatted YAML file"
+trace musterr $PIPELINES deploy

libs/cmdio/render.go

@@ -395,9 +395,11 @@ func fancyJSON(v any) ([]byte, error) {
 }
 
 const errorTemplate = `{{ "Error" | red }}: {{ .Summary }}
+{{- if and .Paths (ne (index .Paths 0).String "") }}
 {{- range $index, $element := .Paths }}
   {{ if eq $index 0 }}at {{else}}   {{ end}}{{ $element.String | green }}
 {{- end }}
+{{- end }}
 {{- range $index, $element := .Locations }}
   {{ if eq $index 0 }}in {{else}}   {{ end}}{{ $element.String | cyan }}
 {{- end }}
@@ -409,9 +411,11 @@ const errorTemplate = `{{ "Error" | red }}: {{ .Summary }}
 `
 
 const warningTemplate = `{{ "Warning" | yellow }}: {{ .Summary }}
+{{- if and .Paths (ne (index .Paths 0).String "") }}
 {{- range $index, $element := .Paths }}
   {{ if eq $index 0 }}at {{else}}   {{ end}}{{ $element.String | green }}
 {{- end }}
+{{- end }}
 {{- range $index, $element := .Locations }}
   {{ if eq $index 0 }}in {{else}}   {{ end}}{{ $element.String | cyan }}
 {{- end }}
@@ -423,9 +427,11 @@ const warningTemplate = `{{ "Warning" | yellow }}: {{ .Summary }}
 `
 
 const recommendationTemplate = `{{ "Recommendation" | blue }}: {{ .Summary }}
+{{- if and .Paths (ne (index .Paths 0).String "") }}
 {{- range $index, $element := .Paths }}
   {{ if eq $index 0 }}at {{else}}   {{ end}}{{ $element.String | green }}
 {{- end }}
+{{- end }}
 {{- range $index, $element := .Locations }}
   {{ if eq $index 0 }}in {{else}}   {{ end}}{{ $element.String | cyan }}
 {{- end }}