Update New Relic - Create Deployment to use Invoke-RestMethod
Update New Relic - Create Deployment to use Invoke-RestMethod

1. Removed Account Id. It is not required or consumed by the API
2. Replaced HTTP Web Request code with Invoke-RestMethod Powershell command

MSDN Invoke-RestMethod
https://technet.microsoft.com/en-us/library/hh849971.aspx

NewRelic Deployment Notification API
https://docs.newrelic.com/docs/apm/new-relic-apm/maintenance/deployment-notifications#api
Parametric/OctopusDeployCommunityLibrary,alastairtree/Library,red-gate/Library,alastairtree/Library,red-gate/Library,Parametric/OctopusDeployCommunityLibrary,alastairtree/Library,Parametric/OctopusDeployCommunityLibrary