[wtf] Improve query library about cratedb-toolkit

[hlcianfagna]

Not sure how you are using/planning to use the data later on, but for troubleshooting I think it may be best to err on the side of collecting more data rather than less as we do not know initially where issues may be, so regarding cluster settings for instance I would definitely support collecting all of them, that is the entire value in the settings column.

[amotl]

I would also like to add a feature which presents a diff of the current settings against default settings. Do you think this will be possible in any sensible way?

[hlcianfagna]

diff of the current settings against default settings. Do you think this will be possible in any sensible way?

Maybe looking at pg_settings ? it has the default values in the reset_val column and the current value in the setting column

[amotl]

Excellent. Thanks for the pointers.