Force mongo 2.6 install in TravisCI until officialy supported (see tr…

…avis-ci#2246)

.travis.yml

@@ -1,14 +1,18 @@
 language: python
 python:
   - 2.7
-services:
-  - mongodb
+# services:
+#   - mongodb
 before_install:
+  - sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 7F0CEB10
+  - echo 'deb http://downloads-distro.mongodb.org/repo/ubuntu-upstart dist 10gen' | sudo tee /etc/apt/sources.list.d/mongodb.list
   - sudo add-apt-repository -y ppa:ubuntugis/ubuntugis-unstable
   - sudo apt-get update -qq
+  - sudo apt-get install -y mongodb-org=2.6.7
   - sudo apt-get install libgeos-dev gdal-bin libgdal1h libgdal-dev
   - sudo /usr/share/elasticsearch/bin/plugin -install elasticsearch/elasticsearch-analysis-icu/2.4.0
   - sudo service elasticsearch start
+  - mongo --version
 install:
   - pip install -r requirements/travis.pip
   - pip install --no-deps -e .