NIAD-3304: Allow non-SNOMEDCT codes to be preserved when mapping `Cod… #985

Job	Run time
Spotbugs	1m 15s
Checkstyle	1m 12s
End-to-End Testing	3m 54s
Integration Tests	9m 24s
Unit Tests	2m 36s
Build & Publish Docker Images (service, gp2gp, .)	1m 23s
Build & Publish Docker Images (wiremock, gp2gp-wiremock, .)	44s
Build & Publish Docker Images (mock-mhs-adaptor, gp2gp-mock-mhs, .)	1m 19s
Build & Publish Docker Images (gpcc-mock, gp2gp-gpcc-mock, ./docker/gpcc-mock)	19s
Build & Publish Docker Images (gpc-api-mock, gp2gp-gpc-api-mock, ./docker/gpc-api-mock)	25s
Build & Publish Docker Images (sds-api-mock, gp2gp-sds-api-mock, ./docker/sds-api-mock)	25s
	22m 56s

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