proxy: revert to original command (#342)

proxy/azure-pipelines.yml

@@ -11,18 +11,14 @@ stages:
           - task: GoTool@0
             inputs:
               version: '1.15'
+          - task: Go@0
+            inputs:
+              command: 'get'
+              arguments: '-u github.com/go-swagger/go-swagger/cmd/swagger'
           - task: CmdLine@2
             inputs:
               script: |
-                sudo apt install gnupg ca-certificates
-                sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 379CE192D401AB61
-                echo "deb https://dl.bintray.com/go-swagger/goswagger-debian ubuntu main" | sudo tee /etc/apt/sources.list.d/goswagger.list
-                sudo apt update
-                sudo apt install swagger -y
-          - task: CmdLine@2
-            inputs:
-              script: |
-                swagger generate client -f ../swagger.yaml -A passbook -t pkg/
+                $(go list -f {{.Target}} github.com/go-swagger/go-swagger/cmd/swagger) generate client -f ../swagger.yaml -A passbook -t pkg/
               workingDirectory: 'proxy/'
           - task: PublishPipelineArtifact@1
             inputs: