use .drone.env for test reference

tests/acceptance/docker/src/acceptance.yml

@@ -10,14 +10,14 @@ services:
       TEST_SERVER_URL: https://ocis-server:9200
       TESTING_DIR: /srv/app/tmp/testing
 
-      CORE_BRANCH: $CORE_BRANCH
-      CORE_COMMIT: $CORE_COMMIT
       STORAGE: $STORAGE
       TEST_SOURCE: $TEST_SOURCE
       BEHAT_SUITE: ${BEHAT_SUITE:-}
       BEHAT_FEATURE: ${BEHAT_FEATURE:-}
       DIVIDE_INTO_NUM_PARTS: $DIVIDE_INTO_NUM_PARTS
       RUN_PART: $RUN_PART
+    env_file:
+      - ../../../../.drone.env
     volumes:
       - ./run-tests.sh:/test/run-tests.sh
       - oCISownCloud10testsuite:/srv

tests/acceptance/docker/src/run-tests.sh

@@ -15,11 +15,11 @@ if cd $PATH_TO_CORE > /dev/null 2>&1
 then
     git checkout $CORE_BRANCH
     git pull
-    git checkout $CORE_COMMIT
+    git checkout $CORE_COMMITID
 else
     git clone -b $CORE_BRANCH --single-branch --no-tags https://github.com/owncloud/core.git $PATH_TO_CORE
     cd $PATH_TO_CORE
-    git checkout $CORE_COMMIT
+    git checkout $CORE_COMMITID
 fi
 
 ## CONFIGURE TEST