[AppService]: fix #18028- Publish-AzWebapp doesn't handle relative paths properly

[Kotasudhakarreddy]

Description

#18028

Public-AzWebapp interprets relative paths incorrectly.

Any relative path I use is appended to c:\windows\system32. There was a previous report of this which was closed without a proper explanation.

PS > Publish-AzWebApp -ResourceGroupName POC -Name Test -ArchivePath ".\TestApp\TestApp.zip" -Force
Publish-AzWebApp: Could not find a part of the path 'C:\Windows\system32\TestApp\TestApp.zip'.

Checklist

• Check this box to confirm: I have read the Submitting Changes section of CONTRIBUTING.md and reviewed the following information:

• SHOULD select appropriate branch. Cmdlets from Autorest.PowerShell should go to generation branch.
• SHOULD make the title of PR clear and informative, and in the present imperative tense.
• SHOULD update ChangeLog.md file(s) appropriately
  • For any service, the ChangeLog.md file can be found at src/{{SERVICE}}/{{SERVICE}}/ChangeLog.md
  • A snippet outlining the change(s) made in the PR should be written under the ## Upcoming Release header in the past tense. Add changelog in description section if PR goes into generation branch.
  • Should not change ChangeLog.md if no new release is required, such as fixing test case only.
• SHOULD have approved design review for the changes in this repository (Microsoft internal only) with following situations
  • Create new module from the scratch
  • Create new resource types which are not easy to conform to Azure PowerShell Design Guidelines
  • Create new resource type which name doesn't use module name as prefix
  • Have design question before implementation
• SHOULD regenerate markdown help files if there is cmdlet API change. Instruction
• SHOULD have proper test coverage for changes in pull request.
• SHOULD NOT introduce breaking changes in Az minor release except preview version.
• SHOULD NOT change version of module in pull request

[BethanyZhou]

.

hold on

[BethanyZhou]

/azp run azure-powershell - security-tools

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[BethanyZhou]

/azp run azure-powershell - security-tools

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