Fix BPF C tests and run as part of CI (#2540)

ci/test-stable-perf.sh

@@ -20,6 +20,9 @@ ci/affects-files.sh \
   exit 0
 }
 
+# Run all BPF C tests
+make -C programs/bpf/c tests
+
 # Must be built out of band
 make -C programs/bpf/rust/noop/ all
 
@@ -34,3 +37,4 @@ else
 fi
 
 exec ci/test-stable.sh "$FEATURES"
+