Convert TestBundleValidate to an acceptance test (#3059)

## Why
<!-- Why are these changes needed? Provide the context that the reviewer
might be missing.
For example, were there any decisions behind the change that are not
reflected in the code itself? -->

One change in the series of changes for converting integration tests
into acceptance tests.
This will allow for easier testing of various backing solutions for
bundle deployment

Author: anton-107

acceptance/bundle/validate/job-references/databricks.yml

@@ -0,0 +1,14 @@
+bundle:
+  name: "foobar"
+
+resources:
+  jobs:
+    outer_loop:
+      name: outer loop
+      tasks:
+        - task_key: my task
+          run_job_task:
+            job_id: ${resources.jobs.inner_loop.id}
+
+    inner_loop:
+      name: inner loop

acceptance/bundle/validate/job-references/output.txt

@@ -0,0 +1,73 @@
+
+>>> [CLI] bundle validate --output json
+{
+  "bundle": {
+    "environment": "default",
+    "git": {
+      "bundle_root_path": "."
+    },
+    "name": "foobar",
+    "target": "default",
+    "terraform": {
+      "exec_path": "[TERRAFORM]"
+    }
+  },
+  "resources": {
+    "jobs": {
+      "inner_loop": {
+        "deployment": {
+          "kind": "BUNDLE",
+          "metadata_file_path": "/Workspace/Users/[USERNAME]/.bundle/foobar/default/state/metadata.json"
+        },
+        "edit_mode": "UI_LOCKED",
+        "format": "MULTI_TASK",
+        "max_concurrent_runs": 1,
+        "name": "inner loop",
+        "permissions": [],
+        "queue": {
+          "enabled": true
+        }
+      },
+      "outer_loop": {
+        "deployment": {
+          "kind": "BUNDLE",
+          "metadata_file_path": "/Workspace/Users/[USERNAME]/.bundle/foobar/default/state/metadata.json"
+        },
+        "edit_mode": "UI_LOCKED",
+        "format": "MULTI_TASK",
+        "max_concurrent_runs": 1,
+        "name": "outer loop",
+        "permissions": [],
+        "queue": {
+          "enabled": true
+        },
+        "tasks": [
+          {
+            "run_job_task": {
+              "job_id": "${resources.jobs.inner_loop.id}"
+            },
+            "task_key": "my task"
+          }
+        ]
+      }
+    }
+  },
+  "sync": {
+    "paths": [
+      "."
+    ]
+  },
+  "targets": null,
+  "workspace": {
+    "artifact_path": "/Workspace/Users/[USERNAME]/.bundle/foobar/default/artifacts",
+    "current_user": {
+      "id": "[USERID]",
+      "short_name": "[USERNAME]",
+      "userName": "[USERNAME]"
+    },
+    "file_path": "/Workspace/Users/[USERNAME]/.bundle/foobar/default/files",
+    "resource_path": "/Workspace/Users/[USERNAME]/.bundle/foobar/default/resources",
+    "root_path": "/Workspace/Users/[USERNAME]/.bundle/foobar/default",
+    "state_path": "/Workspace/Users/[USERNAME]/.bundle/foobar/default/state"
+  }
+}

acceptance/bundle/validate/job-references/script

@@ -0,0 +1 @@
+trace $CLI bundle validate --output json

integration/bundle/helpers_test.go

@@ -62,13 +62,6 @@ func writeConfigFile(t testutil.TestingT, config map[string]any) string {
 	return filepath
 }
 
-func validateBundle(t testutil.TestingT, ctx context.Context, path string) ([]byte, error) {
-	ctx = env.Set(ctx, "BUNDLE_ROOT", path)
-	c := testcli.NewRunner(t, ctx, "bundle", "validate", "--output", "json")
-	stdout, _, err := c.Run()
-	return stdout.Bytes(), err
-}
-
 func deployBundle(t testutil.TestingT, ctx context.Context, path string) {
 	ctx = env.Set(ctx, "BUNDLE_ROOT", path)
 	c := testcli.NewRunner(t, ctx, "bundle", "deploy", "--force-lock", "--auto-approve")