add stages

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

scripts/nightly.yaml

@@ -1,9 +1,11 @@
 variables:
   ReleaseVersion: '4.8.10'
 
-jobs:
+stages:
+- stage: Build
+  jobs:
 
-- job: Mac
+  - job: Mac
     displayName: "Mac Build"
     pool:
       vmImage: "macOS-latest"
@@ -17,7 +19,7 @@ jobs:
         artifactName: 'Mac'
         targetPath: $(Build.ArtifactStagingDirectory)
 
-- job: Ubuntu
+  - job: Ubuntu
     displayName: "Ubuntu build"
     pool:
       vmImage: "ubuntu-latest"
@@ -31,7 +33,7 @@ jobs:
         artifactName: 'Ubuntu'
         targetPath: $(Build.ArtifactStagingDirectory)
 
-- job: Manylinux
+  - job: Manylinux
     displayName: "Manylinux build"
     pool:
       vmImage: "ubuntu-latest"
@@ -48,7 +50,7 @@ jobs:
         artifactName: 'Manylinux'
         targetPath: $(Build.ArtifactStagingDirectory)
 
-- job: Windows32
+  - job: Windows32
     displayName: "Windows 32-bit build"
     pool:
       vmImage: "vs2017-win2016"
@@ -71,7 +73,7 @@ jobs:
         targetPath: $(Build.ArtifactStagingDirectory)
         artifactName: 'Windows32'
 
-- job: Windows64
+  - job: Windows64
     displayName: "Windows 64-bit build"
     pool:
       vmImage: "vs2017-win2016"
@@ -94,8 +96,9 @@ jobs:
         targetPath: $(Build.ArtifactStagingDirectory)
         artifactName: 'Windows64'
 
-
+- stage: Package
-- job: NuGet
+  jobs:
+  - job: NuGet
     displayName: "NuGet packaging"
     dependsOn:
     - Mac
@@ -161,7 +164,7 @@ jobs:
         verbosityPack: detailed
         includeSymbols: true
 
-- job: Python
+  - job: Python
     displayName: "Python packaging"
     dependsOn:
     - Manylinux
@@ -203,7 +206,8 @@ jobs:
         artifactName: 'Python packages'
         targetPath: src/api/python/dist
 
-- job: Deploy
+- stage: Deployment
+  - job: Deploy
     displayName: "Deploy into GitHub"
     dependsOn: 
     - Mac