Set include_realm=1 default in parse_hba_line

With include_realm=1 being set down in parse_hba_auth_opt, if multiple
options are passed on the pg_hba line, such as:

host all     all    0.0.0.0/0    gss include_realm=0 krb_realm=XYZ.COM

We would mistakenly reset include_realm back to 1.  Instead, we need to
set include_realm=1 up in parse_hba_line, prior to parsing any of the
additional options.

Discovered by Jeff McCormick during testing.

Bug introduced by 9a088417.

Back-patch to 9.5

src/backend/libpq/hba.c

@@ -1274,6 +1274,19 @@ parse_hba_line(List *line, int line_num, char *raw_line)
 		return NULL;
 	}
 
+	/*
+	 * For GSS and SSPI, set the default value of include_realm to true.
+	 * Having include_realm set to false is dangerous in multi-realm
+	 * situations and is generally considered bad practice.  We keep the
+	 * capability around for backwards compatibility, but we might want to
+	 * remove it at some point in the future.  Users who still need to strip
+	 * the realm off would be better served by using an appropriate regex in a
+	 * pg_ident.conf mapping.
+	 */
+	if (parsedline->auth_method == uaGSS ||
+		parsedline->auth_method == uaSSPI)
+		parsedline->include_realm = true;
+
 	/* Parse remaining arguments */
 	while ((field = lnext(field)) != NULL)
 	{
@@ -1376,19 +1389,6 @@ parse_hba_auth_opt(char *name, char *val, HbaLine *hbaline, int line_num)
 	hbaline->ldapscope = LDAP_SCOPE_SUBTREE;
 #endif
 
-	/*
-	 * For GSS and SSPI, set the default value of include_realm to true.
-	 * Having include_realm set to false is dangerous in multi-realm
-	 * situations and is generally considered bad practice.  We keep the
-	 * capability around for backwards compatibility, but we might want to
-	 * remove it at some point in the future.  Users who still need to strip
-	 * the realm off would be better served by using an appropriate regex in a
-	 * pg_ident.conf mapping.
-	 */
-	if (hbaline->auth_method == uaGSS ||
-		hbaline->auth_method == uaSSPI)
-		hbaline->include_realm = true;
-
 	if (strcmp(name, "map") == 0)
 	{
 		if (hbaline->auth_method != uaIdent &&