travis-ci google play deploy fix

-try using new oauth2client

.travis.yml

@@ -124,8 +124,7 @@ script:
 
 after_success:
   - if [[ "${TRAVIS_OS_NAME}" = "android" && "${TRAVIS_PULL_REQUEST}" = "false" && "${TRAVIS_BRANCH}" = "master" ]]; then
-         pip install --user oauth2client==1.5.2
-      && pip install --user google-api-python-client PyOpenSSL
+         pip install --user google-api-python-client PyOpenSSL
       && cd ${SHADOW_BUILD_DIR} && openssl aes-256-cbc -K $encrypted_25db6eb7c3fd_key -iv $encrypted_25db6eb7c3fd_iv -in ${TRAVIS_BUILD_DIR}/Google_Play_Android_Developer-bb93ae7d61ca.p12.enc -out Google_Play_Android_Developer-bb93ae7d61ca.p12 -d
       && ${TRAVIS_BUILD_DIR}/tools/google_play_upload.py org.mavlink.qgroundcontrol ${SHADOW_BUILD_DIR}/release/package/qgroundcontrol.apk
       ;

tools/google_play_upload.py

@@ -21,6 +21,7 @@ import argparse
 from apiclient.discovery import build
 import httplib2
 from oauth2client import client
+from oauth2client.service_account import ServiceAccountCredentials
 
 TRACK = 'beta'  # Can be 'alpha', beta', 'production' or 'rollout'
 SERVICE_ACCOUNT_EMAIL = (
@@ -47,10 +48,7 @@ def main():
   # with the Credentials. Note that the first parameter, service_account_name,
   # is the Email address created for the Service account. It must be the email
   # address associated with the key that was created.
-  credentials = client.SignedJwtAssertionCredentials(
-      SERVICE_ACCOUNT_EMAIL,
-      key,
-      scope='https://www.googleapis.com/auth/androidpublisher')
+  credentials = ServiceAccountCredentials.from_p12_keyfile(SERVICE_ACCOUNT_EMAIL, key, scopes=['https://www.googleapis.com/auth/androidpublisher'])
   http = httplib2.Http()
   http = credentials.authorize(http)