ServiceBus2018-preview: Updated as per review comments from ARM Team for Eventhub swagger

[Ajit Navasare (v-Ajnava)]

Latest improvements:

MSFT employees can try out our new experience at OpenAPI Hub - one location for using our validation tools and finding your workflow.

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[openapi-portal-comment]

If you're a MSFT employee, click this link
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[Azure SDK Bot (AutorestCI)]

Automation for azure-sdk-for-python

Nothing to generate for azure-sdk-for-python

[Ajit Navasare (v-Ajnava)]

EventHub: PR link with ARM team comments : #4748

[Azure SDK Bot (AutorestCI)]

Automation for azure-sdk-for-js

The initial PR has been merged into your service PR:
Azure/azure-sdk-for-js#765

[Azure Builder (azuresdkci)]

Can one of the admins verify this patch?

[Azure SDK Bot (AutorestCI)]

Automation for azure-sdk-for-ruby

A PR has been created for you:
Azure/azure-sdk-for-ruby#2122

[Azure SDK Bot (AutorestCI)]

Automation for azure-sdk-for-go

Nothing to generate for azure-sdk-for-go

[Azure SDK Bot (AutorestCI)]

Automation for azure-sdk-for-node

The initial PR has been merged into your service PR:
Azure/azure-sdk-for-node#4530

[Azure SDK Bot (AutorestCI)]

Automation for azure-sdk-for-java

Nothing to generate for azure-sdk-for-java

[Anu Thomas (anuchandy)]

Closing and re-opening to rerun diff tool, which was failing with message

 An assembly specified in the application dependencies manifest (OpenApiDiff.deps.json) was not found

[openapi-portal-comment]

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to view this PR's validation status on our new OpenAPI Hub spec management tool.

[Anu Thomas (anuchandy)]

Sarangan Rajamanickam (@sarangan12) investigated the CI OpenAPIDiff invocation failure. This is happening for 3 PRs, images used to run tools for those PR were invalid, this fixed now.