az pipelines run set parameters

I have 2 yaml pipelines in different repos within the same project and cannot trigger one from the other as per the documentation.

I've tried changing default branches (which isn't a viable long-term solution) and published artifacts (which isnt required as it uses helm repo). The only way I could do it it to call 'az pipelines run' from the upstream branch. I can use resources:pipelines in the downstream pipeline to create an 'associated pipelines' reference in the upstream branch. However, the reference is created in the previously upstream run, not the current run which calls 'az pipelines run'.

I am hoping to use resources:pipelines:version to ensure the current build is referenced but this does not accept variables from az pipelines run. It is suggested that it will accept parameters so I would like to use that.

The Azure DevOps Services REST API supports parameters but I would prefer to use az cli:
https://docs.microsoft.com/en-us/rest/api/azure/devops/pipelines/runs/run-pipeline?view=azure-devops-rest-6.0

Please add support for setting parameters in az pipelines run command.

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* ID: 66f0311f-8316-ea52-6171-9eb14b9f7bc7
* Version Independent ID: e79f2bc9-543d-9a14-a08c-911d037e108a
* Content: [az pipelines](https://docs.microsoft.com/en-us/cli/azure/pipelines?view=azure-cli-latest)
* Content Source: [latest/docs-ref-autogen/pipelines.yml](https://github.com/MicrosoftDocs/azure-docs-cli/blob/master/latest/docs-ref-autogen/pipelines.yml)
* GitHub Login: @rloutlaw
* Microsoft Alias: **routlaw**