CI: add azure artifacts to existing github release

Author: tstenner

azure-pipelines.yml

@@ -11,22 +11,19 @@ stages:
 - stage: build
   jobs:
   - job: Linux
-    pool:
-      vmImage: 'ubuntu-16.04'
+    pool: { vmImage: 'ubuntu-16.04' }
     steps:
     - template: ci/azure_build_steps.yml
   - job: Win64
-    pool:
-      vmImage: 'vs2017-win2016'
+    pool: { vmImage: 'vs2017-win2016' }
     steps:
     - bash: 'echo "##vso[task.prependpath]C:\\Program Files\\CMake\\bin\\"'
       displayName: 'Fix PATH'
     - template: ci/azure_build_steps.yml
       parameters:
         cmake_stepvars: '-A x64'
   - job: MacOS
-    pool:
-      vmImage: 'macOS-10.13'
+    pool: { vmImage: 'macOS-10.13' }
     variables:
       MACOSX_DEPLOYMENT_TARGET: '10.9'
     steps:
@@ -35,8 +32,7 @@ stages:
         run_tests: true
         cmake_stepvars: '-DCMAKE_INTERPROCEDURAL_OPTIMIZATION=1 -DCMAKE_POLICY_DEFAULT_CMP0069=NEW'
   - job: manylinux
-    pool:
-      vmImage: 'ubuntu-16.04'
+    pool: { vmImage: 'ubuntu-16.04' }
     container: quay.io/pypa/manylinux2010_x86_64:latest
     steps:
     - bash: CFLAGS="-flto -static-libstdc++ -std=c++14" ./standalone_compilation_linux.sh
@@ -45,8 +41,7 @@ stages:
 - stage: Upload
   jobs:
   - job: Upload
-    pool:
-      vmImage: 'ubuntu-16.04'
+    pool: { vmImage: 'ubuntu-16.04' }
     steps:
     - bash: mkdir upload
     - task: DownloadPipelineArtifact@2
@@ -55,7 +50,10 @@ stages:
     - bash: mv upload/manylinux2010/liblsl.so upload/liblsl-manylinux2010-liblsl64.so
     - task: GithubRelease@0
       inputs:
+        action: edit
+        tag: $(Build.SourceBranchName)
         githubConnection: upload
         draft: true
+        addChangelog: false
         assets: |
           upload/**/liblsl-*