PROV: Adjust the KEYMGMT name specs to include all names

This is very simply to allow the common case, where the KEYMGMT is
fetched first, and all names are needed at that time to secure that
they are found.
Reviewed-by: NShane Lontis <shane.lontis@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/10647)

providers/defltprov.c

@@ -388,12 +388,12 @@ static const OSSL_ALGORITHM deflt_asym_cipher[] = {
 
 static const OSSL_ALGORITHM deflt_keymgmt[] = {
 #ifndef OPENSSL_NO_DH
-    { "DH", "default=yes", dh_keymgmt_functions },
+    { "DH:dhKeyAgreement", "default=yes", dh_keymgmt_functions },
 #endif
 #ifndef OPENSSL_NO_DSA
-    { "DSA", "default=yes", dsa_keymgmt_functions },
+    { "DSA:dsaEncryption", "default=yes", dsa_keymgmt_functions },
 #endif
-    { "RSA", "default=yes", rsa_keymgmt_functions },
+    { "RSA:rsaEncryption", "default=yes", rsa_keymgmt_functions },
     { NULL, NULL, NULL }
 };