Travis CI: Fix mbedtools command to checkout

Author: hugueskamba

.travis.yml

@@ -88,7 +88,7 @@ matrix:
         - pip install "Jinja2>=2.10.1,<2.11"
         - pip install "intelhex>=1.3,<=2.2.1"
       script:
-        - mbedtools checkout
+        - mbedtools deploy
         - echo mbedtools build -t GCC_ARM -m ${TARGET_NAME} -b ${PROFILE}
         - mbedtools build -t GCC_ARM -m ${TARGET_NAME} -b ${PROFILE}
         - ccache -s