Exclude compile fail tests and add random to dependency list

Author: mborland

.github/workflows/codecov.yml

@@ -49,6 +49,7 @@ jobs:
           git submodule update --init libs/predef
           git submodule update --init libs/static_assert
           git submodule update --init libs/test
+          git submodule update --init libs/random
           ./bootstrap.sh
           ./b2 headers
       - name: gcc-gcov-native

test/tidy/make_tidy_02_files.gmk

@@ -6,3 +6,9 @@
 # -----------------------------------------------------------------------------
 
 FILES_PRJ  = $(basename $(wildcard $(PATH_SRC)/*.cpp))
+
+FILES_EXCLUDE := $(basename $(wildcard $(PATH_SRC)/test_illegal_*))
+
+FILES_EXCLUDE := $(basename $(FILES_EXCLUDE))
+
+FILES_PRJ     := $(filter-out $(FILES_EXCLUDE),$(FILES_PRJ))