Enable mosquitto installation on OS X and do execute it on all available Travis CI OSes

Signed-off-by: Otavio Rodolfo Piske <opiske@redhat.com>

.travis.yml

@@ -10,10 +10,11 @@ os:
   - osx
 
 before_install:
-  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew install openssl ; fi
+  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew install openssl mosquitto ; fi
+  - mosquitto -d
 
 script:
-  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then mkdir build.paho ; cd build.paho; cmake -DPAHO_WITH_SSL=TRUE -DPAHO_BUILD_DOCUMENTATION=FALSE -DPAHO_BUILD_SAMPLES=TRUE .. ; make ; fi
+  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then mkdir build.paho ; cd build.paho; cmake -DPAHO_WITH_SSL=TRUE -DPAHO_BUILD_DOCUMENTATION=FALSE -DPAHO_BUILD_SAMPLES=TRUE .. ; make ; ctest -VV ; fi
   - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then mkdir build.paho ; cd build.paho; cmake -DPAHO_WITH_SSL=TRUE -DPAHO_BUILD_DOCUMENTATION=FALSE -DPAHO_BUILD_SAMPLES=TRUE .. ; make ; ctest -VV ; fi
 addons:
   apt: