psa_copy_key: Add test cases to specifically check non-exportability

Test that copying a non-exportable key doesn't make it exportable.
This complements similar tests that exercise a different usage flag.

Author: gilles-peskine-arm

tests/suites/test_suite_psa_crypto.data

@@ -503,10 +503,14 @@ Copy key: AES, fewer usage flags
 depends_on:MBEDTLS_AES_C:MBEDTLS_CIPHER_MODE_CTR
 copy_key_policy:PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_EXPORT:PSA_ALG_CTR:PSA_KEY_TYPE_AES:"404142434445464748494a4b4c4d4e4f":PSA_KEY_USAGE_ENCRYPT:PSA_ALG_CTR:-1:-1:PSA_KEY_USAGE_ENCRYPT:PSA_ALG_CTR
 
-Copy key: AES, more usage flags
+Copy key: AES, 1 more usage flag
 depends_on:MBEDTLS_AES_C:MBEDTLS_CIPHER_MODE_CTR
 copy_key_policy:PSA_KEY_USAGE_ENCRYPT:PSA_ALG_CTR:PSA_KEY_TYPE_AES:"404142434445464748494a4b4c4d4e4f":PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT:PSA_ALG_CTR:-1:-1:PSA_KEY_USAGE_ENCRYPT:PSA_ALG_CTR
 
+Copy key: AES, 2 more usage flags
+depends_on:MBEDTLS_AES_C:MBEDTLS_CIPHER_MODE_CTR
+copy_key_policy:PSA_KEY_USAGE_ENCRYPT:PSA_ALG_CTR:PSA_KEY_TYPE_AES:"404142434445464748494a4b4c4d4e4f":PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT | PSA_KEY_USAGE_EXPORT:PSA_ALG_CTR:-1:-1:PSA_KEY_USAGE_ENCRYPT:PSA_ALG_CTR
+
 Copy key: AES, intersect usage flags
 depends_on:MBEDTLS_AES_C:MBEDTLS_CIPHER_MODE_CTR
 copy_key_policy:PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_EXPORT:PSA_ALG_CTR:PSA_KEY_TYPE_AES:"404142434445464748494a4b4c4d4e4f":PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT:PSA_ALG_CTR:-1:-1:PSA_KEY_USAGE_ENCRYPT:PSA_ALG_CTR
@@ -519,10 +523,14 @@ Copy key: AES, source=target, constraint with fewer usage flags
 depends_on:MBEDTLS_AES_C:MBEDTLS_CIPHER_MODE_CTR
 copy_key_policy:PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_EXPORT:PSA_ALG_CTR:PSA_KEY_TYPE_AES:"404142434445464748494a4b4c4d4e4f":PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_EXPORT:PSA_ALG_CTR:PSA_KEY_USAGE_ENCRYPT:PSA_ALG_CTR:PSA_KEY_USAGE_ENCRYPT:PSA_ALG_CTR
 
-Copy key: AES, source=target, constraint with more usage flags
+Copy key: AES, source=target, constraint with 1 more usage flag
 depends_on:MBEDTLS_AES_C:MBEDTLS_CIPHER_MODE_CTR
 copy_key_policy:PSA_KEY_USAGE_ENCRYPT:PSA_ALG_CTR:PSA_KEY_TYPE_AES:"404142434445464748494a4b4c4d4e4f":PSA_KEY_USAGE_ENCRYPT:PSA_ALG_CTR:PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT:PSA_ALG_CTR:PSA_KEY_USAGE_ENCRYPT:PSA_ALG_CTR
 
+Copy key: AES, source=target, constraint with 2 more usage flags
+depends_on:MBEDTLS_AES_C:MBEDTLS_CIPHER_MODE_CTR
+copy_key_policy:PSA_KEY_USAGE_ENCRYPT:PSA_ALG_CTR:PSA_KEY_TYPE_AES:"404142434445464748494a4b4c4d4e4f":PSA_KEY_USAGE_ENCRYPT:PSA_ALG_CTR:PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT | PSA_KEY_USAGE_EXPORT:PSA_ALG_CTR:PSA_KEY_USAGE_ENCRYPT:PSA_ALG_CTR
+
 Copy key: AES, source=target, constraint with different usage flags
 depends_on:MBEDTLS_AES_C:MBEDTLS_CIPHER_MODE_CTR
 copy_key_policy:PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_EXPORT:PSA_ALG_CTR:PSA_KEY_TYPE_AES:"404142434445464748494a4b4c4d4e4f":PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_EXPORT:PSA_ALG_CTR:PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT:PSA_ALG_CTR:PSA_KEY_USAGE_ENCRYPT:PSA_ALG_CTR