Add config tests for including provider config files #76

Job	Run time
compiler (gcc-7, ubuntu-20.04)	6m 24s
compiler (gcc-8, ubuntu-20.04)	7m 25s
compiler (gcc-9, ubuntu-20.04)	8m 8s
compiler (gcc-10, ubuntu-20.04)	7m 21s
compiler (gcc-11, ubuntu-22.04)	7m 51s
compiler (gcc-12, ubuntu-22.04)	9m 13s
compiler (gcc-13, ubuntu-22.04, ubuntu-toolchain-r/test)	4m 31s
compiler (clang-6.0, ubuntu-20.04)	6m 20s
compiler (clang-7, ubuntu-20.04)	7m 4s
compiler (clang-8, ubuntu-20.04)	6m 34s
compiler (clang-9, ubuntu-20.04)	8m 7s
compiler (clang-10, ubuntu-20.04)	6m 25s
compiler (clang-11, ubuntu-20.04)	6m 17s
compiler (clang-12, ubuntu-20.04)	6m 23s
compiler (clang-13, ubuntu-22.04)	8m 51s
compiler (clang-14, ubuntu-22.04)	7m 53s
compiler (clang-15, ubuntu-22.04, jammy)	7m 6s
compiler (clang-16, ubuntu-22.04, jammy)	6m 53s
	2h 8m 46s

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