Add Vision and Mission statement to Verify:Testing

Why is this change being made?

The vision and mission statements for grouptesting was placeholder. I surveyed the team and its counterparts to come up with a vision and mission statement that was appropriate and accurate.

Does this MR meet the acceptance criteria?

Assign to DRI

• Did you assign this change to the correct DRI of the page or information you are changing?

Conformity

• Added description to this MR explaining the reasons for the proposed change, per say-why-not-just-what