Adding patch API for Configurations

[vrdmr]

Adding spec for the new Patch operation for Automation/DscConfigurations.

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[AutorestCI]

Automation for azure-sdk-for-python

The initial PR has been merged into your service PR:
Azure/azure-sdk-for-python#1959

[vrdmr]

Ping - @sarangan12, @fearthecowboy Could you please review this PR

[sarangan12]

1. https://travis-ci.org/Azure/azure-rest-api-specs/jobs/355232262
2. https://travis-ci.org/Azure/azure-rest-api-specs/jobs/355232261

Please take a look at the above errors and fix them for approval.

[sarangan12]

@vrdmr I wanted to check in if you need any help in resolving the issues. Please let me know

[vrdmr]

Hi @sarangan12 - I have other PRs out to fix the same issues - #2690, #2687 and this is one in the series of PRs to get our Linting and Model Validation issues down to 0.

[vrdmr]

For the model issue, I'll add the example.

[AutorestCI]

Automation for azure-libraries-for-java

Nothing to generate for azure-libraries-for-java

[AutorestCI]

Automation for azure-sdk-for-go

The initial PR has been merged into your service PR:
Azure/azure-sdk-for-go#1411

[AutorestCI]

Automation for azure-sdk-for-node

The initial PR has been merged into your service PR:
Azure/azure-sdk-for-node#2483

[vrdmr]

@sarangan12 I fixed the model validation issue. The issue was with the spec I wrote. We dont have a 201 return code, but it was added. I fixed it.

[vrdmr]

@sarangan12 Could you please take a look at this PR.

[vrdmr]

Thanks @sarangan12