Relrec merging

[gerrycampion]

Allows Match Datasets to use match information provided in a relrec.

Example given in test data and in attached data. In attached data, you can see a sample rule, test data, and result (with one negative result). CG0174.zip

• Library model meta is required in order to find variables that should have wildcards.
• This update includes 2 bugfixes for library and caching
  1. The testrule endpoint dataservice was being created without the library metadata object
  2. The model metadata cache key was being extracted from the ig incorrectly (wrong indices)

# Variable: FAOBJ
# Condition: Related record present in parent domain dataset
# Rule: FAOBJ in (--TERM, --TRT, --DECOD)
Check:
  all:
    - name: FAOBJ
      operator: not_equal_to
      value: RELREC.__TERM
    - name: FAOBJ
      operator: not_equal_to
      value: RELREC.__TRT
    - name: FAOBJ
      operator: not_equal_to
      value: RELREC.__DECOD
Match Datasets:
  - Name: RELREC
    Wildcard: __