Update drone.yml layout

* add matrix
* improve cline speed

.drone.yml

@@ -1,46 +1,74 @@
-build:
+pipeline:
+  clone:
+    image: plugins/git
+    depth: 1
   jsunit:
     image: nextcloudci/jsunit:1.0.6
     commands:
       - ./autotest-js.sh
+    when:
+      matrix:
+        TESTS: jsunit
   sqlite-php5.4:
     image: nextcloudci/php5.4:1.0.7
     commands:
-      - rm -rf data/* config/config.php # TODO: remove this - temporary fix for CI issues
-      - git submodule update --init
       - ./occ maintenance:install --database-name oc_autotest --database-user oc_autotest --admin-user admin --admin-pass admin --database sqlite --database-pass=''
       - NOCOVERAGE=true ./autotest.sh sqlite
+    when:
+      matrix:
+        DB: sqlite
+        PHP: 5.4
   sqlite-php5.5:
     image: nextcloudci/php5.5:1.0.7
     commands:
-      - rm -rf data/* config/config.php # TODO: remove this - temporary fix for CI issues
-      - git submodule update --init
       - ./occ maintenance:install --database-name oc_autotest --database-user oc_autotest --admin-user admin --admin-pass admin --database sqlite --database-pass=''
       - NOCOVERAGE=true ./autotest.sh sqlite
+    when:
+      matrix:
+        DB: sqlite
+        PHP: 5.5
   sqlite:
     image: nextcloudci/php5.6:1.0.6
     commands:
-      - rm -rf data/* config/config.php # TODO: remove this - temporary fix for CI issues
-      - git submodule update --init
       - ./occ maintenance:install --database-name oc_autotest --database-user oc_autotest --admin-user admin --admin-pass admin --database sqlite --database-pass=''
       - ./autotest.sh sqlite
+    when:
+      matrix:
+        DB: sqlite
+        PHP: 5.6
   postgres:
     image: nextcloudci/php5.6:1.0.6
     commands:
       - sleep 10 # gives the database enough time to initialize
-      - rm -rf data/* config/config.php # TODO: remove this - temporary fix for CI issues
-      - git submodule update --init
       - ./autotest.sh pgsql
+    when:
+      matrix:
+        DB: postgres
+        PHP: 5.6
   integration:
     image: nextcloudci/php5.6:1.0.6
     commands:
-      - rm -rf data/* config/config.php # TODO: remove this - temporary fix for CI issues
-      - git submodule update --init
       - ./occ maintenance:install --admin-pass=admin
       - cd build/integration
       - ./run.sh
+    when:
+      matrix:
+        TESTS: integration
 
-compose:
+matrix:
+  include:
+    - TESTS: integration
+    - TESTS: jsunit
+    - DB: sqlite
+      PHP: 5.4
+    - DB: sqlite
+      PHP: 5.5
+    - DB: sqlite
+      PHP: 5.6
+    - DB: postgres
+      PHP: 5.6
+
+services:
   cache:
     image: redis
   postgres:
@@ -48,3 +76,6 @@ compose:
     environment:
       - POSTGRES_USER=oc_autotest
       - POSTGRES_PASSWORD=oc_autotest
+    when:
+      matrix:
+        DB: postgres