Updates type for LA metro sectors IDs (la_metro_sector)

[jswiesner]

There were 4 IDs introduced in #139 which contain OCD ID types (la_metro_sector) that are specific to one region, and therefore conceptually invalid. The OCD ID type should only provide the nature of the district, while the value should provide the specific location.

I'd like to propose updating these IDs to instead use type transit. These districts appear to refer to service areas of the LA county metro system (https://media.metro.net/about_us/service_sectors/images/map_service_councils.pdf), therefore the generic type transit seems most suitable.

[jswiesner]

Hi @reginafcompton. It would be great to get your opinion about this proposed change.

[reginafcompton]

Hi @jswiesner – currently, I'm not involved in the OCD project. I'd suggest pinging Hannah Cushman, who supports LA Metro Councilmatic and its scrapers. Her insight will be more valuable than mine!

[jloutsenhizer]

Using a more generic transit type makes sense to me, we should also add sameAs annotations to map the old OCD IDs that used la_metro_sector to the new ones.

Pinging @hancush to provide thoughts on this change.

[hancush]

Seems reasonable to me, @jswiesner – thanks for the PR! As @jloutsenhizer suggested, please preserve the original identifiers by adding the revised identifier to the sameAs field, then adding the revised identifiers as new records. Relevant docs, if needed.