"Managing your Snowflake Spend with Periscope" - Aug 26

Closes #4790 (closed)

Review app: https://4790-managing-your-snowflake-spend-with-periscope.about-src.gitlab.com/2019/08/26/managing-your-snowflake-spend-with-periscope-and-dbt/

Checklist

• Link to issue added, and set to close when this MR is merged
• Due date and milestone (if applicable) added for the desired publish date
• If time sensitive
  • Added ~"priority" label
  • Mentioned @rebecca to give her a heads up ASAP
• Blog post file formatted correctly, including any accompanying images
• Review app checked for any formatting issues
• Reviewed by fellow team member
• Reviewed by content team

/label ~"blog post"