fixed travis cfg

.travis.yml

@@ -14,10 +14,7 @@ branches:
   - /^(?i:topic)-.*$/
 
 # install terraform
-before_deploy:
-  - provider: script
-    skip_cleanup: true
-    script: cd $TEST_DIR && ./before_deploy.sh
+before_deploy: cd $TEST_DIR && ./before_deploy.sh
 
 # terraform deploy script
 deploy:
@@ -29,7 +26,4 @@ deploy:
       branch: topic-101-vm-simple-linux
 
 # destroy resources with Azure CLI
-after_deploy:
-  - provider: script
-    skip_cleanup: true
-    script: cd $TEST_DIR && ./after_deploy.sh
+after_deploy: cd $TEST_DIR && ./after_deploy.sh