Add copy of monolithic CASE build for a UCO test

UCO Issue 393 added a test that assumed a file's existence during the
UCO CI.  That file is the UCO monolithic build, a purposefully Git-
ignored build artifact.

`case-utils` currently repurposes the UCO `pytest` script to ensure
UCO's tests also pass when substituting the monolithic build of CASE.

With Issue 393, the file reference to the UCO monolithic build needs to
be handled downstream in `case-utils`.  This patch adds that file by
making a copy as a Git-ignored file.  (A soft link could cause potential
confusion due to management of the modification timestamp on the
monolithic build file.)

References:
* ucoProject/UCO#393
* [ONT-295] Release CASE 1.0.0

Signed-off-by: Alex Nelson <alexander.nelson@nist.gov>

tests/case_utils/case_validate/.gitignore

@@ -0,0 +1 @@
+uco_monolithic.ttl

tests/case_utils/case_validate/Makefile

@@ -15,6 +15,11 @@ SHELL := /bin/bash
 
 top_srcdir := $(shell cd ../../.. ; pwd)
 
+case_version := $(shell $(PYTHON3) $(top_srcdir)/case_utils/ontology/version_info.py)
+ifeq ($(case_version),)
+$(error Unable to determine CASE version)
+endif
+
 tests_srcdir := $(top_srcdir)/tests
 
 all: \
@@ -57,7 +62,8 @@ check-cli:
 	  --directory cli \
 	  check
 
-check-uco_test_examples:
+check-uco_test_examples: \
+  uco_monolithic.ttl
 	$(MAKE) \
 	  --directory uco_test_examples \
 	  check
@@ -72,3 +78,17 @@ clean:
 	@$(MAKE) \
 	  --directory cli \
 	  clean
+
+# This file is necessary for a UCO unit test that case-utils runs
+# substituting its own monolithic build.
+# It is incorrect to designate this the "UCO" monolithic build due to
+# CASE concepts being present, but using the CASE build here keeps with
+# the spirit of confirming UCO tests continue to pass when using the
+# CASE monolithic build.
+uco_monolithic.ttl: \
+  $(top_srcdir)/case_utils/ontology/version_info.py \
+  $(top_srcdir)/case_utils/ontology/case-$(case_version).ttl
+	rm -f $@
+	cp \
+	  $(top_srcdir)/case_utils/ontology/case-$(case_version).ttl \
+	  $@