all.sh: Test the Mbed Crypto exporter

Ensure that the exporter creates a "crypto" folder where "make test"
runs and passes. Ensure that cleanup also runs without error.
diff --git a/tests/scripts/all.sh b/tests/scripts/all.sh
index 1faa5d5..9962046 100755
--- a/tests/scripts/all.sh
+++ b/tests/scripts/all.sh
@@ -456,6 +456,14 @@
 cleanup
 tests/scripts/doxygen.sh
 
+msg "test: Mbed Crypto exporter " # ~ 30s
+cleanup
+make -f scripts/mbed_crypto.make
+cd crypto
+make test
+make clean
+cd ..
+make -f scripts/mbed_crypto.make clean
 
 
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