CCBC-1615: handle rate limit codes during bootstrap

Change-Id: If3cab498a0e6eb5a8592a65eb90385aa5ca36a20
Reviewed-on: https://review.couchbase.org/c/libcouchbase/+/197388
Tested-by: Build Bot <build@couchbase.com>
Reviewed-by: Brett Lawson <brett19@gmail.com>

Author: avsej

src/bucketconfig/bc_cccp.cc

@@ -541,6 +541,11 @@ void CccpProvider::on_io_read()
             case PROTOCOL_BINARY_RESPONSE_NOT_SUPPORTED:
             case PROTOCOL_BINARY_RESPONSE_UNKNOWN_COMMAND:
                 return_error(LCB_ERR_UNSUPPORTED_OPERATION);
+            case PROTOCOL_BINARY_RATE_LIMITED_NETWORK_INGRESS:
+            case PROTOCOL_BINARY_RATE_LIMITED_NETWORK_EGRESS:
+            case PROTOCOL_BINARY_RATE_LIMITED_MAX_CONNECTIONS:
+            case PROTOCOL_BINARY_RATE_LIMITED_MAX_COMMANDS:
+                return_error(LCB_ERR_RATE_LIMITED);
             default:
                 return_error(LCB_ERR_PROTOCOL_ERROR);
         }