Rename crypto_openssl.[ch] to crypto_openssl_mgt.[ch]

Rename crypto_openssl.[ch] to crypto_openssl_mgt.[ch] because it is possible we
need crypto_openssl.[ch] in the future.

Follows #24658.

Signed-off-by: Fernando Fernandez Mancera <ffernandezmancera@gmail.com>

src/common/crypto_openssl.c → src/common/crypto_openssl_mgt.c

@@ -10,7 +10,7 @@
  * \brief Block of functions related to operations from OpenSSL.
  **/
 
-#include "crypto_openssl.h"
+#include "crypto_openssl_mgt.h"
 
 #ifndef NEW_THREAD_API
 /** A number of preallocated mutexes for use by OpenSSL. */