[AzureResourceManagerTemplateDeployment] - Fix for bicep param file with multiple extensions

[Cadacious]

Task name: AzureResourceManagerTemplateDeployment

Description: Fixes .bicepparam file support to work when bicep param file has multiple file extensions like main.ENVNAME.bicepparm it results in a main.parameters.json file as expected.

This new code will now properly detect when more than one file extension is applied and properly remove all file extensions before replacing with .parameters.json.

Documentation changes required: No

Added unit tests: Yes, unit test was added to cover this use case

Attached related issue: Yes, Comment on previous PR with this issue

Checklist:

• Task version was bumped - please check instruction how to do it
• Checked that applied changes work as expected

Link to pipeline run with new version of task code

Passing unit tests:

[Cadacious]

@v-mohithgc can we get the process started to get this run in the validation pipelines and reviewed if it passes all checks please?

[v-mohithgc]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 3 pipeline(s).

[v-mohithgc]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 3 pipeline(s).