Lukas Joswiak bfb1c51299 Add clearknob fdbcli command ...

The `clearknob` command clears the value that a knob has been set to in
the configuration database. Note that this does not mean the knob value
itself gets cleared - only the value in the configuration database is
cleared. The value of the knob will revert to whatever is hardcoded in
the corresponding `*Knobs.cpp` file.

Sample `fdbcli` session:

```
Welcome to the fdbcli. For help, type `help'.
fdb> getknob min_trace_severity
`min_trace_severity' is not found
fdb> setknob min_trace_severity 20
Please set a description for the change. Description must be non-empty
description: test
Committed (2)
fdb> getknob min_trace_severity
`min_trace_severity' is `20'
fdb> clearknob min_trace_severity
Please set a description for the change. Description must be non-empty
description: clear
Committed (4)
fdb> getknob min_trace_severity
`min_trace_severity' is not found
```

Transactions are also supported with the new `clearknob` command:

```
Welcome to the fdbcli. For help, type `help'.
fdb> begin
Transaction started
fdb> setknob min_trace_severity 20
fdb> clearknob min_trace_severity
fdb> commit
Please set a description for the change. Description must be non-empty.
description: test
Committed (16)
fdb> getknob min_trace_severity
`min_trace_severity' is not found
```

2023-08-31 17:36:05 -07:00

..

fdbcli_tests.py

Add clearknob fdbcli command

2023-08-31 17:36:05 -07:00

metacluster_fdbcli_tests.py

SNOW-804199 Support restoring a cluster with a tenant in the error state (#357)

2023-06-15 22:23:46 -07:00