Cant update location if valid_from_utc not set

[peterdudfield]

make doctor output

N/a

Verification

• I have searched the existing issues to ensure this bug has not already been reported.
• I have run make init locally.
• I have been able to reproduce this bug locally.

What were you trying to do (and why)?

Trying to update a location to, update the metadata, but didnt want to set valid_from_utc

What happened (including relevant commands, logs etc)?

couldnt update lcoation

What did you expect to happen?

It to work with out setting valid_from_utc and valid_from_utc to be set to now

Step-by-step reproduction instructions (optional).

[devsjc]

Fixed by #181