Fix Strings Starting With Jinja Templates

Without quoting the string scala role will not play.

```
ERROR: Syntax Error while loading YAML script, xxx/scala/tasks/main.yml
Note: The error may actually appear before this position: line 16, column 16

- name: Scala | Add the Scala binary to the system path (/etc/profile)
  lineinfile: {{ item }}
               ^
We could be wrong, but this one looks like it might be an issue with
missing quotes.  Always quote template expression brackets when they
start a value. For instance:

    with_items:
      - {{ foo }}

Should be written as:

    with_items:
      - "{{ foo }}"


Ansible failed to complete successfully. Any error output should be
```