issue #3447 - add expanded valuesets to fhir-core-r4b

I thought that we needed the hl7.terminology package so that we could
expand the R4B ValueSets, but it turns out the R4B downloads page has
its own "expansions.json" download that contains all of the necessary
ValueSets in their expanded form.

Now only fhir-core-r4b will be packaged on the server by default...if
someone needs the other 3000+ resources from hl7.terminology they can
still add that to the userlib.

Signed-off-by: Lee Surprenant <[email protected]>

conformance/fhir-core-r4b/definitions/R4B/CHANGELOG.md

@@ -1,4 +1,4 @@
-All files downloaded from https://build.fhir.org/branches/R4B/definitions.json.zip on 2021-12-08
+Most files downloaded from https://build.fhir.org/branches/R4B/definitions.json.zip on 2021-12-08
 
 ## Steps to update
 
@@ -22,4 +22,15 @@ https://chat.fhir.org/#narrow/stream/179166-implementers/topic/R4B.20missing.20v
 
 Removed invalid ConceptMap at [Bundle.entry[489].resource.contained[0].group[0].element[0].target[0]]
 This ConceptMap was embedded within http://hl7.org/fhir/ValueSet/nhin-purposeofuse
-java.lang.IllegalArgumentException: Unrecognized element: 'relationship'
+java.lang.IllegalArgumentException: Unrecognized element: 'relationship'
+
+
+### expansions.json
+
+expansions.json downloaded separately from https://build.fhir.org/branches/R4B/expansions.json on 2022-03-10
+
+Fixed the following:
+- Missing required element: 'value' [Bundle.entry[90].resource.expansion.contains[0]]
+  - Removed over 5000 instances of a designation that had language "zh-CN" and no value
+  - And over 20 instance of an empty designation {} and many others
+  - And one instance of illegal control char \u0002 "Polish zE\u0002oty"