Fix failing serialized_dashboard acceptance tests (#3119)

## Changes
<!-- Brief summary of your changes that is easy to understand -->
1. change the `dashboard/detect-change` acceptance test, so that it only
checks for a single field in the `serialized_dashboard` output
2. change the `bind/dashboard` acceptance tests so that it normalizes
the contents of the `serialized_dashboard` field before printing to
output

## 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? -->
Due to changes in the Lakeview API these tests started failing in our
staging environments

## Tests
<!-- How have you tested the changes? -->
Ran the changed tests from local machine against AWS and GCP targets

<!-- If your PR needs to be included in the release notes for next
release,
add a separate entry in NEXT_CHANGELOG.md as part of your PR. -->

Author: anton-107

acceptance/bundle/deploy/dashboard/detect-change/output.txt

@@ -14,7 +14,7 @@ Deployment complete!
 
 === Load the dashboard by its ID and confirm its display name: {
   "display_name": "test-dashboard-[UNIQUE_NAME]",
-  "serialized_dashboard": "{\"pages\":[{\"name\":\"fdd21a3c\",\"displayName\":\"New Page\",\"layout\":[{\"widget\":{\"name\":\"82eb9107\",\"textbox_spec\":\"# I'm a title\"},\"position\":{\"x\":0,\"y\":0,\"width\":6,\"height\":2}},{\"widget\":{\"name\":\"ffa6de4f\",\"textbox_spec\":\"Text\"},\"position\":{\"x\":0,\"y\":2,\"width\":6,\"height\":2}}],\"pageType\":\"PAGE_TYPE_CANVAS\"}]}"
+  "page_display_name": "New Page"
 }
 
 === Make an out of band modification to the dashboard and confirm that it is detected:

acceptance/bundle/deploy/dashboard/detect-change/script

@@ -14,7 +14,7 @@ trace $CLI workspace get-status "${DASHBOARD_PATH}" | jq '{object_type,path}'
 
 title "Load the dashboard by its ID and confirm its display name: "
 DASHBOARD_ID=$($CLI bundle summary --output json | jq -r '.resources.dashboards.file_reference.id')
-$CLI lakeview get $DASHBOARD_ID | jq '{display_name,serialized_dashboard}'
+$CLI lakeview get "${DASHBOARD_ID}" | jq '{display_name,page_display_name: (.serialized_dashboard | fromjson | .pages[0].displayName)}'
 
 title "Make an out of band modification to the dashboard and confirm that it is detected:\n"
 RESOURCE_ID=$($CLI workspace get-status "${DASHBOARD_PATH}" | jq -r '.resource_id')

acceptance/bundle/deployment/bind/dashboard/output.txt

@@ -15,7 +15,15 @@ Deployment complete!
   "lifecycle_state": "ACTIVE",
   "path": "/Users/[USERNAME]/test dashboard [UUID].lvdash.json",
   "parent_path": "/Users/[USERNAME]",
-  "serialized_dashboard": "{\"pages\":[{\"name\":\"02724bf2\",\"displayName\":\"Page One\",\"pageType\":\"PAGE_TYPE_CANVAS\"}]}"
+  "serialized_dashboard": {
+    "pages": [
+      {
+        "name": "02724bf2",
+        "displayName": "Page One",
+        "pageType": "PAGE_TYPE_CANVAS"
+      }
+    ]
+  }
 }
 
 >>> [CLI] bundle deployment unbind dashboard1
@@ -33,5 +41,13 @@ Destroy complete!
   "lifecycle_state": "ACTIVE",
   "path": "/Users/[USERNAME]/test dashboard [UUID].lvdash.json",
   "parent_path": "/Users/[USERNAME]",
-  "serialized_dashboard": "{\"pages\":[{\"name\":\"02724bf2\",\"displayName\":\"Page One\",\"pageType\":\"PAGE_TYPE_CANVAS\"}]}"
+  "serialized_dashboard": {
+    "pages": [
+      {
+        "name": "02724bf2",
+        "displayName": "Page One",
+        "pageType": "PAGE_TYPE_CANVAS"
+      }
+    ]
+  }
 }

acceptance/bundle/deployment/bind/dashboard/script

@@ -19,11 +19,11 @@ trace $CLI bundle deployment bind dashboard1 "${DASHBOARD_ID}" --auto-approve
 
 trace $CLI bundle deploy
 
-trace $CLI lakeview get "${DASHBOARD_ID}" | jq '{display_name, lifecycle_state, path, parent_path, serialized_dashboard}'
+trace $CLI lakeview get "${DASHBOARD_ID}" | jq '{display_name, lifecycle_state, path, parent_path, serialized_dashboard} | .serialized_dashboard |= fromjson'
 
 trace $CLI bundle deployment unbind dashboard1
 
 trace $CLI bundle destroy --auto-approve
 
 # Read the pre-defined dashboard again (expecting it still exists and is not deleted):
-trace $CLI lakeview get "${DASHBOARD_ID}" | jq '{display_name, lifecycle_state, path, parent_path, serialized_dashboard}'
+trace $CLI lakeview get "${DASHBOARD_ID}" | jq '{display_name, lifecycle_state, path, parent_path, serialized_dashboard} | .serialized_dashboard |= fromjson'