remove cache.clear() from tests setup/teardown
remove cache.clear() from tests setup/teardown

adusca/treeherder,vaishalitekale/treeherder,deathping1994/treeherder,parkouss/treeherder,sylvestre/treeherder,rail/treeherder,sylvestre/treeherder,avih/treeherder,avih/treeherder,avih/treeherder,vaishalitekale/treeherder,akhileshpillai/treeherder,jgraham/treeherder,vaishalitekale/treeherder,glenn124f/treeherder,kapy2010/treeherder,adusca/treeherder,rail/treeherder,glenn124f/treeherder,wlach/treeherder,kapy2010/treeherder,KWierso/treeherder,KWierso/treeherder,akhileshpillai/treeherder,glenn124f/treeherder,kapy2010/treeherder,tojonmz/treeherder,vaishalitekale/treeherder,wlach/treeherder,parkouss/treeherder,adusca/treeherder,edmorley/treeherder,tojonmz/treeherder,gbrmachado/treeherder,edmorley/treeherder,moijes12/treeherder,rail/treeherder,moijes12/treeherder,tojon/treeherder,sylvestre/treeherder,deathping1994/treeherder,adusca/treeherder,avih/treeherder,sylvestre/treeherder,gbrmachado/treeherder,wlach/treeherder,tojon/treeherder,tojonmz/treeherder,tojonmz/treeherder,wlach/treeherder,sylvestre/treeherder,parkouss/treeherder,gbrmachado/treeherder,jgraham/treeherder,adusca/treeherder,sylvestre/treeherder,deathping1994/treeherder,kapy2010/treeherder,deathping1994/treeherder,glenn124f/treeherder,moijes12/treeherder,wlach/treeherder,tojon/treeherder,KWierso/treeherder,akhileshpillai/treeherder,jgraham/treeherder,edmorley/treeherder,parkouss/treeherder,glenn124f/treeherder,moijes12/treeherder,gbrmachado/treeherder,gbrmachado/treeherder,jgraham/treeherder,tojon/treeherder,deathping1994/treeherder,vaishalitekale/treeherder,jgraham/treeherder,rail/treeherder,gbrmachado/treeherder,jgraham/treeherder,tojonmz/treeherder,akhileshpillai/treeherder,wlach/treeherder,moijes12/treeherder,avih/treeherder,tojonmz/treeherder,avih/treeherder,glenn124f/treeherder,rail/treeherder,edmorley/treeherder,moijes12/treeherder,adusca/treeherder,deathping1994/treeherder,KWierso/treeherder,rail/treeherder,akhileshpillai/treeherder,akhileshpillai/treeherder,kapy2010/treeherder,parkouss/treeherder,parkouss/treeherder,vaishalitekale/treeherder