[console] wrong Units for Request/Response Content length in Analytics Dashboards

[apoddany]

When adding, in Analytics Dashboard, a widget for "Request Content length" and/or "Response Content length", the displayed values will show results in ms instead of bytes.

Steps to Reproduce (for bugs)

1. Create an API with Plan and Application to subscribe to it
2. Generate some activity on it
3. Create a Dashboard for this Application
4. Add 2 "stats" widgets for "Request Content length" and/or "Response Content length".
5. Check the Dashboard results : ms are displayed instead of bytes

Your Environment

• Version used: 3.5.10 3.5.12
• Browser Name and version: N/A
• Operating System and version: N/A

[gaetanmaisse]

Notes for testers: Widgets need to be deleted and readded to a dashboard to fix the unit issues.

[mouligno]

LGTM