Deprecated (now removed) auth API endpoint breaks PowervRA Connect-vRAServer

[tocano33]

Steps to reproduce

Connect-vRAServer -Server [server] -Credential (Get-Credential)

Expected behavior

Connects to the vRA Server (and either successfully authenticates or fails with invalid credentials)

Actual behavior

HTTP 400 Bad Request error

I believe this is because Connect-vRAServer uses the endpoint /csp/gateway/am/idp/auth/login?access_token which was deprecated in a recent version and as of v8.12 has been removed completely, thus completely breaking PowervRA user/pass credential authentication.

Rather, line 165 needs to instead use endpoint /csp/gateway/am/api/login?access_token

Environment data

> $PSVersionTable
Name                           Value
----                           -----
PSVersion                      5.1.17763.3770
PSEdition                      Desktop
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0...}
BuildVersion                   10.0.17763.3770
CLRVersion                     4.0.30319.42000
WSManStackVersion              3.0
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1

# as well as 

> $PSVersionTable
Name                           Value
----                           -----
PSVersion                      7.3.4
PSEdition                      Core
GitCommitId                    7.3.4
OS                             Microsoft Windows 10.0.17763
Platform                       Win32NT
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1
WSManStackVersion              3.0

> (Get-Module PowervRA).Version
Major  Minor  Build  Revision
-----  -----  -----  --------
5      2      0      -1

> $vRAConnection
# N/A

[jonathanmedd]

Thanks for raising and fixing in #288