Downgrade the tools version since the latest is not available

.gitlab-ci.yml

@@ -4,7 +4,7 @@ image: openjdk:8-jdk
 variables:
   ANDROID_COMPILE_SDK: "25"
   ANDROID_BUILD_TOOLS: "25.0.2"
-  ANDROID_SDK_TOOLS: "25.2.3"
+  ANDROID_SDK_TOOLS: "24.4.1"
 before_script:
   - apt-get --quiet update --yes