For client cert based authentication, add client cert as an AuthProperty
diff --git a/src/core/tsi/ssl_transport_security.h b/src/core/tsi/ssl_transport_security.h
index 51c0003..411fc53 100644
--- a/src/core/tsi/ssl_transport_security.h
+++ b/src/core/tsi/ssl_transport_security.h
@@ -48,6 +48,8 @@
#define TSI_X509_SUBJECT_ALTERNATIVE_NAME_PEER_PROPERTY \
"x509_subject_alternative_name"
+#define TSI_X509_PEM_CERT_PROPERTY "x509_pem_cert"
+
#define TSI_SSL_ALPN_SELECTED_PROTOCOL "ssl_alpn_selected_protocol"
/* --- tsi_ssl_handshaker_factory object ---