Travis: Install android *DKs in verbose mode

Builds tend to fail due to the 10 min limit for stalled builds.
Most likely because the download is done silently and takes more than
10 min depending on the Travis connection.

.travis.yml

@@ -68,7 +68,7 @@ addons:
 
 before_script:
   - if [ "$TRAVIS_OS_NAME" = "osx" ]; then brew update; brew install scons; fi
-  - if [ "$TRAVIS_OS_NAME" = "osx" ] && [ "$GODOT_TARGET" = "android" ]; then brew update; brew install android-sdk android-ndk; export ANDROID_HOME=/usr/local/opt/android-sdk; export ANDROID_NDK_ROOT=/usr/local/opt/android-ndk; fi
+  - if [ "$TRAVIS_OS_NAME" = "osx" ] && [ "$GODOT_TARGET" = "android" ]; then brew update; brew install -v android-sdk android-ndk; export ANDROID_HOME=/usr/local/opt/android-sdk; export ANDROID_NDK_ROOT=/usr/local/opt/android-ndk; fi
 
 script:
   - scons platform=$GODOT_TARGET CXX=$CXX openssl=builtin