Change measuring units in prefix plugin #2068
Description
What would you like to be added:
Update prefix plugin's configuration. Make blockSize parameter deprecated + add a new parameter blockSizeTokens which will define block size in tokens.
In addition, change units of the data stored by the prefix plugin in PrepareRequestData from number of blocks to prefix length in tokens.
Why is this needed:
Usage of tokens units in block size configuration is more convenient.
Data stored in PrepareRequestData is used in PD profile handler - the prefix length should be in tokens.