Add examples for Express Route Circuit APIs

[gimotwanMSFT]

This checklist is used to make sure that common issues in a pull request are addressed. This will expedite the process of getting your pull request merged and avoid extra work on your part to fix issues discovered during the review process.

PR information

• The title of the PR is clear and informative.
• There are a small number of commits, each of which have an informative message. This means that previously merged commits do not appear in the history of the PR. For information on cleaning up the commits in your pull request, see this page.
• Except for special cases involving multiple contributors, the PR is started from a fork of the main repository, not a branch.
• If applicable, the PR references the bug/issue that it fixes.
• Swagger files are correctly named (e.g. the api-version in the path should match the api-version in the spec).

Quality of Swagger

• I have read the contribution guidelines.
• My spec meets the review criteria:
  • The spec conforms to the Swagger 2.0 specification.
  • The spec follows the guidelines described in the Swagger checklist document.
  • Validation tools were run on swagger spec(s) and have all been fixed in this PR.

[AutorestCI]

Automation for azure-libraries-for-java

Encountered a Subprocess error: (azure-libraries-for-java)

Command: ['/usr/local/bin/autorest', '/tmp/tmpqcrn858v/rest/specification/network/resource-manager/readme.md', '--azure-libraries-for-java-folder=/tmp/tmpqcrn858v/sdk', '--fluent', '--java', '--multiapi', '--verbose']
Finished with return code 1
and output:

AutoRest code generation utility [version: 2.0.4262; node: v7.10.1]
(C) 2018 Microsoft Corporation.
https://aka.ms/autorest
   Loading AutoRest core      '/root/.autorest/@microsoft.azure_autorest-core@2.0.4278/node_modules/@microsoft.azure/autorest-core/dist' (2.0.4278)
   Loading AutoRest extension '@microsoft.azure/autorest.java' (~2.1.32->2.1.70)
   Loading AutoRest extension '@microsoft.azure/autorest.modeler' (2.3.38->2.3.38)
Shutting Down
Shutting Down
FATAL: java/generate - FAILED
FATAL: Error: [Exception] AutoRest extension '@microsoft.azure/autorest.java' terminated.
Process() cancelled due to exception : [Exception] AutoRest extension '@microsoft.azure/autorest.java' terminated.

[AutorestCI]

Automation for azure-sdk-for-node

Encountered a Subprocess error: (azure-sdk-for-node)

Command: ['/usr/local/bin/autorest', '/tmp/tmpzrzbqr3m/rest/specification/network/resource-manager/readme.md', '--license-header=MICROSOFT_MIT_NO_VERSION', '--node-sdks-folder=/tmp/tmpzrzbqr3m/sdk', '--nodejs', '--use=@microsoft.azure/autorest.nodejs@^2.1.43']
Finished with return code 1
and output:

AutoRest code generation utility [version: 2.0.4262; node: v7.10.1]
(C) 2018 Microsoft Corporation.
https://aka.ms/autorest
   Loading AutoRest core      '/root/.autorest/@microsoft.azure_autorest-core@2.0.4278/node_modules/@microsoft.azure/autorest-core/dist' (2.0.4278)
   Loading AutoRest extension '@microsoft.azure/autorest.nodejs' (^2.1.43->2.1.59)
   Loading AutoRest extension '@microsoft.azure/autorest.modeler' (2.3.44->2.3.44)
Shutting Down
FATAL: nodejs/generate - FAILED
FATAL: Error: [Exception] AutoRest extension '@microsoft.azure/autorest.nodejs' terminated.
Process() cancelled due to exception : [Exception] AutoRest extension '@microsoft.azure/autorest.nodejs' terminated.

[AutorestCI]

Automation for azure-sdk-for-ruby

A PR has been created for you:
Azure/azure-sdk-for-ruby#1348

[AutorestCI]

Automation for azure-sdk-for-python

A PR has been created for you:
Azure/azure-sdk-for-python#2689

[AutorestCI]

Automation for azure-sdk-for-go

Encountered a Subprocess error: (azure-sdk-for-go)

Command: ['/usr/local/bin/autorest', '/tmp/tmp3xcuewpe/rest/specification/network/resource-manager/readme.md', '--go', '--go-sdk-folder=/tmp/tmp3xcuewpe/src/github.com/Azure/azure-sdk-for-go', '--multiapi', '--use=@microsoft.azure/autorest.go@~2.1.100', '--use-onever', '--verbose']
Finished with return code 1
and output:

AutoRest code generation utility [version: 2.0.4262; node: v7.10.1]
(C) 2018 Microsoft Corporation.
https://aka.ms/autorest
   Loading AutoRest core      '/root/.autorest/@microsoft.azure_autorest-core@2.0.4278/node_modules/@microsoft.azure/autorest-core/dist' (2.0.4278)
   Loading AutoRest extension '@microsoft.azure/autorest.go' (~2.1.100->2.1.100)
   Loading AutoRest extension '@microsoft.azure/autorest.modeler' (2.3.38->2.3.38)
Processing batch task - {"tag":"package-2018-04"} .
Processing batch task - {"tag":"package-2018-02"} .
Processing batch task - {"tag":"package-2018-01"} .
Shutting Down
FATAL: go/generate - FAILED
FATAL: Error: [Exception] AutoRest extension '@microsoft.azure/autorest.go' terminated.
Process() cancelled due to exception : [Exception] AutoRest extension '@microsoft.azure/autorest.go' terminated.
Failure during batch task - {"tag":"package-2018-01"} -- false.

[sergey-shandar]

LGTM

[jhendrixMSFT]

@AutorestCI regenerate azure-sdk-for-go

[AutorestCI]

Encountered an unknown error

Traceback (most recent call last):
  File "/usr/local/lib/python3.6/dist-packages/swaggertosdk/github_tools.py", line 32, in exception_to_github
    yield context
  File "/usr/local/lib/python3.6/dist-packages/swaggertosdk/restapi/bot_framework.py", line 104, in manage_comment
    response = getattr(self.handler, orderstr)(webhook_data.issue, *split_text)
  File "/usr/local/lib/python3.6/dist-packages/swaggertosdk/restapi/restbot.py", line 53, in regenerate
    clean_sdk_pr(rest_pr, sdk_repo)
  File "/usr/local/lib/python3.6/dist-packages/swaggertosdk/restapi/github_handler.py", line 288, in clean_sdk_pr
    msg = upstream.push(":"+sdk_pr_head)  # old style delete
  File "/usr/local/lib/python3.6/dist-packages/git/remote.py", line 843, in push
    return self._get_push_info(proc, progress)
  File "/usr/local/lib/python3.6/dist-packages/git/remote.py", line 729, in _get_push_info
    proc.wait(stderr=stderr_text)
  File "/usr/local/lib/python3.6/dist-packages/git/cmd.py", line 415, in wait
    raise GitCommandError(self.args, status, errstr)
git.exc.GitCommandError: Cmd('git') failed due to: exit code(1)
  cmdline: git push --porcelain upstream :restapi_auto_3182
  stderr: 'error: unable to delete 'restapi_auto_3182': remote ref does not exist
error: failed to push some refs to 'https://AutorestCI:58ab395c311d1bd75b3e1db1cc8adaf9acc42afe@github.com/Azure/azure-sdk-for-go.git''