FS-11052: Allow alias for crypto suites

For outgoing calls send AES crypto in offer using corrected names
for keys of length 192 and 256, i.e. names containing _192_CM_
and _256_CM_ instead of _CM_192_ and CM_256_. For incoming calls
accept both naming conventions, decaying to same entry in SUITES.

src/include/switch_rtp.h

@@ -65,6 +65,7 @@ typedef enum {
 
 typedef struct switch_srtp_crypto_suite_s {
 	char *name;
+	const char *alias;
 	switch_rtp_crypto_key_type_t type;
 	int keysalt_len;
 	int salt_len;