Migrated Drone Matrix build to Multi-Machine pipeline

.drone.yml

@@ -1,16 +1,35 @@
+kind: pipeline
+name: java8
+
 clone:
-  git:
-    image: plugins/git
-    depth: 1
+  disable: true
+
+steps:
+- name: clone
+  image: plugins/git
+  settings:
+    depth: 10
     skip_verify: true
+- name: test
+  image: maven:3.5-jdk-8-alpine
+  commands:
+  - mvn clean test
 
-pipeline:
-  test:
-    image: ${MVN_IMAGE}
-    commands:
-      - mvn clean test
+---
+kind: pipeline
+name: java11
+
+clone:
+  disable: true
+
+steps:
+- name: clone
+  image: plugins/git
+  settings:
+    depth: 10
+    skip_verify: true
+- name: test
+  image: maven:3.5-jdk-11-slim
+  commands:
+  - mvn clean test
 
-matrix:
-  MVN_IMAGE:
-  - maven:3.5-jdk-8-alpine
-  - maven:3.5-jdk-11-slim