Add integration tests.

Author: dwsteele

.github/workflows/test.yml

@@ -51,7 +51,7 @@ jobs:
           - param: test --vm=f44 --param=c-only --param=no-valgrind --param=no-coverage --param=no-performance
 
           # All unit tests on musl libc
-          - param: test --vm=a321 --param=c-only --param=no-coverage --param=no-performance
+          - param: test --vm=a321 --param=no-coverage --param=no-performance
 
           # All unit tests on musl libc
           - param: test --vm=a324 --param=c-only --param=no-coverage --param=no-performance