Restore parallel CI test execution (Drone 1.x)

Author: Fnux

.drone.yml

@@ -13,11 +13,11 @@ steps:
 - name: git
   pull: default
   image: plugins/git
-  settings:
 
 - name: clone
   pull: default
   image: plugins/git
+  depends_on: [ git ]
   commands:
   - if [ "$DRONE_BUILD_EVENT" = "pull_request" ]; then
       git config user.email "dotty.bot@epfl.ch";
@@ -28,41 +28,37 @@ steps:
 - name: test
   pull: default
   image: lampepfl/dotty:2019-04-22
+  depends_on: [ clone ]
   commands:
   - cp -R . /tmp/1/ && cd /tmp/1/
   - ./project/scripts/sbt ";compile ;test"
   - ./project/scripts/cmdTests
-  settings:
-    group: test
 
 - name: test_bootstrapped
   pull: default
   image: lampepfl/dotty:2019-04-22
+  depends_on: [ clone ]
   commands:
   - cp -R . /tmp/2/ && cd /tmp/2/
   - ./project/scripts/sbt ";dotty-bootstrapped/compile ;dotty-bootstrapped/test; dotty-semanticdb/compile; dotty-semanticdb/test:compile;sjsSandbox/run;sjsSandbox/test;sjsJUnitTests/test"
   - ./project/scripts/bootstrapCmdTests
-  settings:
-    group: test
 
 - name: community_build
   pull: default
   image: lampepfl/dotty:2019-04-22
+  depends_on: [ clone ]
   commands:
   - cp -R . /tmp/3/ && cd /tmp/3/
   - git submodule update --init --recursive --jobs 7
   - ./project/scripts/sbt community-build/test
-  settings:
-    group: test
 
 - name: test_sbt
   pull: default
   image: lampepfl/dotty:2019-04-22
+  depends_on: [ clone ]
   commands:
   - cp -R . /tmp/4/ && cd /tmp/4/
   - ./project/scripts/sbt sbt-dotty/scripted
-  settings:
-    group: test
   when:
     event:
     - tag
@@ -71,12 +67,11 @@ steps:
 - name: test_java11
   pull: default
   image: lampepfl/dotty:2019-04-22
+  depends_on: [ clone ]
   commands:
   - export PATH="/usr/lib/jvm/java-11-openjdk-amd64/bin:$PATH"
   - cp -R . /tmp/6/ && cd /tmp/6/
   - ./project/scripts/sbt ";compile ;test"
-  settings:
-    group: test
   when:
     event:
     - push
@@ -86,6 +81,11 @@ steps:
 - name: documentation
   pull: default
   image: lampepfl/dotty:2019-04-22
+  depends_on:
+  - test
+  - test_bootstrapped
+  - community_build
+  - test_java11
   commands:
   - ./project/scripts/genDocs
   environment:
@@ -100,6 +100,12 @@ steps:
 - name: publish_nightly
   pull: default
   image: lampepfl/dotty:2019-04-22
+  depends_on:
+  - test
+  - test_bootstrapped
+  - community_build
+  - test_sbt
+  - test_java11
   commands:
   - ./project/scripts/sbtPublish ";dotty-bootstrapped/publishSigned ;sonatypeRelease"
   environment:
@@ -121,6 +127,12 @@ steps:
 - name: publish_release
   pull: default
   image: lampepfl/dotty:2019-04-22
+  depends_on:
+  - test
+  - test_bootstrapped
+  - community_build
+  - test_sbt
+  - test_java11
   commands:
   - ./project/scripts/sbt dist-bootstrapped/packArchive
   - ./project/scripts/sbtPublish ";dotty-bootstrapped/publishSigned ;sonatypeRelease"
@@ -141,6 +153,7 @@ steps:
 - name: github_release
   pull: default
   image: plugins/github-release
+  depends_on: [ publish_release ]
   settings:
     checksum:
     - sha256
@@ -157,6 +170,12 @@ steps:
 - name: publish_sbt_release
   pull: default
   image: lampepfl/dotty:2019-04-22
+  depends_on:
+  - test
+  - test_bootstrapped
+  - community_build
+  - test_sbt
+  - test_java11
   commands:
   - ./project/scripts/sbtPublish ";sbt-dotty/publishSigned ;sonatypeRelease"
   environment: