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[9.16] Increase catalog zone entries hash table's bits size

Arаm Sаrgsyаn requested to merge 3744-catz-small-update-to-large-catz-causes-cpu-spike into v9_16

The hash table implementation in the v9_16 branch does not support automatic resize operation, so the initial value of the table should be chosen carefully.

Catalog zones entries hash table's size is currently only 4 bits, which is very low for a catalog zone with thousands of entries, and causes CPU consumption spikes when working with the hash table to add/delete/search entries.

Use 16 bits instead, which should make working with big catalog zones much faster at the expense of slightly higher memory usage, i.e. 512 KiB for a 64-bit system for each catalog zone.

Closes #3744 (closed)

Edited by Arаm Sаrgsyаn

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