[BUG] Migration check on same version throws error while scaling Dashboards.

[mihirsoni]

Describe the bug

Since OpenSource Dashboards has been forked and changed it's version to 1.0 the current migration logic checks the version and halt the startup.

To Reproduce
Steps to reproduce the behavior:

• Start Dashboards with FGAC domain
• Create multiple tenants
• Add another node / container to existing Dashboards fleet (Blue / Green) .
• Now the new container will complain that index needs to be migrated.

Expected behavior
It should not throw this error

OpenSearch Version
1.0

Dashboards Version
1.0

Plugins

All plugins (FGAC included)

Additional context

Here is sample log error

{"type":"log","@timestamp":"2022-03-01T20:23:12Z","tags":["error","plugins","securityDashboards"],"pid":9630,"message":"Error: Index .kibana_-1085563064_some_random_name_1 belongs to a version of OpenSearch Dashboards that cannot be automatically migrated. Reset it or use the X-Pack upgrade assistant.\n    at assertIsSupportedIndex at Object.fetchInfo (rc/core/server/saved_objects/migrations/core/opensearch_index.js:82:10)\n    at process._tickCallback (internal/process/next_tick.js:68:7)"}

[ahopp]

@mihirsoni Following up on this. Can you verify the cluster was health at the the the node was add?

Additionally, can you verify the mappings were correct and healthy? Our assumption is yes, but wanted to make sure.