travis-ci try installing PyOpenSSL with pip

.travis.yml

@@ -57,7 +57,6 @@ addons:
     - libopenscenegraph-dev
     - libsdl1.2-dev
     - libudev-dev
-    - python-openssl
     - texlive-font-utils
 
 cache:
@@ -122,7 +121,7 @@ script:
 
 after_success:
   - if [[ "${TRAVIS_OS_NAME}" = "android" && "${TRAVIS_PULL_REQUEST}" = "false" && "${TRAVIS_BRANCH}" = "master" ]]; then
-      pip install --user google-api-python-client
+         pip install --user google-api-python-client PyOpenSSL
       && openssl aes-256-cbc -K $encrypted_25db6eb7c3fd_key -iv $encrypted_25db6eb7c3fd_iv -in Google_Play_Android_Developer-bb93ae7d61ca.p12.enc -out android/Google_Play_Android_Developer-bb93ae7d61ca.p12 -d
       && ./tools/google_play_upload.py org.mavlink.qgroundcontrol release/package/qgroundcontrol.apk
       ;