Fix dagger-android build in Travis

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=139355153
diff --git a/.travis.yml b/.travis.yml
index 29f9ff3..44bfc7c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,10 +5,12 @@
 
 android:
   components:
-    - build-tools-23.0.0
-    - android-23
-  licenses:
-    - android-sdk-license-5be876d5
+    - tools
+    - tools # Duplicated as per https://github.com/travis-ci/travis-ci/issues/6040#issuecomment-219367943
+    - build-tools-25.0.0
+    - android-25
+    - platform-tools
+    - extra-android-m2repository
 
 before_install:
   - sudo rm -f /etc/mavenrc
@@ -38,3 +40,7 @@
   only:
     - master
     - /^release.*$/
+
+cache:
+  directories:
+    - $HOME/.m2