Improve Job Name Sanitization

[Chris Brown]

We use the task name to construct the job name. The sanitization we do perform only handles whitespace.

We need to account for other scenarios, including task names with parentheses.

From the AWS docs:

The name of the job. The first character must be alphanumeric, and up to 128 letters (uppercase and lowercase), numbers, hyphens, and underscores are allowed.