tests: add sstable mutation test to the full set of regression tests
tests: add sstable mutation test to the full set of regression tests

Signed-off-by: Glauber Costa <f8b79557d19b40666ebe336545a0b6178af65685@cloudius-systems.com>

avikivity/scylla,glommer/scylla,tempbottle/scylla,rluta/scylla,asias/scylla,respu/scylla,raphaelsc/scylla,scylladb/scylla,kjniemi/scylla,dwdm/scylla,rentongzhang/scylla,justintung/scylla,dwdm/scylla,gwicke/scylla,justintung/scylla,scylladb/scylla,linearregression/scylla,capturePointer/scylla,senseb/scylla,shaunstanislaus/scylla,wildinto/scylla,glommer/scylla,wildinto/scylla,rentongzhang/scylla,tempbottle/scylla,victorbriz/scylla,rentongzhang/scylla,shaunstanislaus/scylla,capturePointer/scylla,guiquanz/scylla,avikivity/scylla,linearregression/scylla,rluta/scylla,kangkot/scylla,stamhe/scylla,scylladb/scylla,duarten/scylla,dwdm/scylla,tempbottle/scylla,aruanruan/scylla,bowlofstew/scylla,duarten/scylla,senseb/scylla,victorbriz/scylla,eklitzke/scylla,guiquanz/scylla,respu/scylla,guiquanz/scylla,kjniemi/scylla,glommer/scylla,phonkee/scylla,bowlofstew/scylla,wildinto/scylla,phonkee/scylla,eklitzke/scylla,justintung/scylla,asias/scylla,gwicke/scylla,asias/scylla,eklitzke/scylla,stamhe/scylla,acbellini/scylla,avikivity/scylla,linearregression/scylla,victorbriz/scylla,bowlofstew/scylla,gwicke/scylla,phonkee/scylla,rluta/scylla,acbellini/scylla,raphaelsc/scylla,respu/scylla,kangkot/scylla,raphaelsc/scylla,acbellini/scylla,senseb/scylla,scylladb/scylla,aruanruan/scylla,aruanruan/scylla,duarten/scylla,shaunstanislaus/scylla,capturePointer/scylla,kjniemi/scylla,kangkot/scylla,stamhe/scylla