Properly parse html errors

[mdqara]

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Repro steps:
<Enter steps to reproduce issue>

Action: azureFunctions.deploy
Error type: 401
Error Message:

<title>401 - Unauthorized: Access is denied due to invalid credentials.</title> <style type="text/css"> </style>

Server Error

401 - Unauthorized: Access is denied due to invalid credentials.

You do not have permission to view this directory or page using the credentials that you supplied.

Version: 0.12.1
OS: win32

[ejizba]

@MDCR55 can you give a little more info:

1. Does this happen consistently?
2. What type of project are you deploying (language, runtime version, etc.)?

And any other repro steps that would help us