Add database upgrade step for 1.9 to update the URL for Open Street Map end point

[agileware-justin]

Add database upgrade step for 1.9 to update the URL for Open Street Map end point

Ping @eileenmcnaughton

Agileware Ref: CIVICRM-2159

[eileenmcnaughton]

Thanks @agileware-justin

[sebalis]

Thank you, @agileware-justin! See my two (minor) comments.

[eileenmcnaughton]

Per ping from @agileware-justin I'm gonna tag 1.10 - the minor comments are improvements - but it's Friday so lets wrap this up this week & we can improve or not later

[sebalis]

Yes, fine with me, and thanks to @agileware-justin for taking care of the upgrade step. And for giving me the opportunity to finally understand how upgrade steps work :-) This will help me to submit more complete PRs in the future.

[eileenmcnaughton]

@sebalis sounds like a win. The gotcha with upgrade steps it remembering to return TRUE - I try to always add type hints cos when someone inevitably copies & pastes them....