ci(.travis.yml): update Ansible to 2.4.6.0

Changelogs:
- https://github.com/ansible/ansible/blob/stable-2.4/CHANGELOG.md
- https://docs.ansible.com/ansible/latest/porting_guides/porting_guide_2.4.html

Part of #1142

Author: php-coder

.travis.yml

@@ -26,7 +26,7 @@ before_script:
       mkdir -p /tmp/uploads /tmp/preview;
       cp src/main/resources/test/test.png /tmp/uploads/1.png;
       npm install -g bootlint;
-      pip install --user html5validator robotframework-lint ansible==2.3.3.0 ansible-lint;
+      pip install --user html5validator robotframework-lint ansible==2.4.6.0 ansible-lint;
       if [ "$TRAVIS_PULL_REQUEST" != 'false' ]; then
         gem install danger nokogiri --no-ri --no-rdoc;
       fi;

src/main/scripts/ci/deploy.sh

@@ -34,6 +34,6 @@ fi
 openssl aes-256-cbc -K "$encrypted_bf07cb25089f_key" -iv "$encrypted_bf07cb25089f_iv" -in "$PRIVATE_KEY.enc" -out "$PRIVATE_KEY" -d
 chmod 600 "$PRIVATE_KEY"
 
-ansible-playbook --inventory-file="$INVENTORY" "$PLAYBOOK" --syntax-check
+ansible-playbook --inventory="$INVENTORY" "$PLAYBOOK" --syntax-check
 
-exec ansible-playbook --inventory-file="$INVENTORY" "$PLAYBOOK" --private-key="$PRIVATE_KEY"
+exec ansible-playbook --inventory="$INVENTORY" "$PLAYBOOK" --private-key="$PRIVATE_KEY"