Bind REPLICATION SLAVE ADMIN to a number of global system variables

SET for the following slave related system GLOBAL-only variables:

• init_slave
• replicate_events_marked_for_skip
• replicate_do_db
• replicate_do_table
• replicate_ignore_db
• replicate_ignore_table
• replicate_wild_do_table
• replicate_wild_ignore_table
• read_binlog_speed_limit
• slave_compressed_protocol
• slave_ddl_exec_mode
• slave_domain_parallel_threads
• slave_exec_mode
• slave_max_allowed_packet
• slave_net_timeout
• slave_parallel_max_queued
• slave_parallel_mode
• slave_parallel_threads
• slave_parallel_workers
• slave_run_triggers_for_rbr
• slave_sql_verify_checksum
• slave_transaction_retry_interval
• slave_type_conversions

is allowed only for users with the SUPER privilege as of 10.5.1.

Let's allow SET for these global variables also for users with the REPLICATION SLAVE ADMIN privilege.