Updates to Coverity scripts

v5 to v7 update, some tweaks, improvements
Metrics/benchmarks for SSD
Log parsing and loading
Extend size analysis
Aggregations for changelog
Number of chunks to dbhash time check
WTS script first apss

figure out what the is going on with sharded cluster based on config db
dump.
Presplit function

given ns min and max values, presplit and distribute chunks evenly.
load script for other sharding functions