Fixes for TFS 2017

Environment variables were not passed over different tasks anymore. Using another way to set these things now.
Write-Host "##vso[task.setvariable variable=DT_SERVICE_ENDPOINT_ID;]$dtserver" for example.

Fix issue ParameterBindingException

See #4

Fix compatibility with AppMon 7

v2.4.3

support Dynatrace AppMon 7

Support for the Release pipeline

From now on, this plugin also has effect on the release pipeline. For each configured environment, we will display the Dynatrace results table in the summary section. If there is data to display off course

Activation of DotNet Agent

Opionally activate DotNet agent via DT_AGENTACTIVE environment variable

Fix: Wait for the dynatrace results to be completed

Before collecting the results from Dynatrace, make sure they were all processed. So we poll every 20 seconds until the results are stable. With a max wait time of 200 seconds.

First usable version

Update README.md

Renamed plugin.