Additional fixes for regressions

Correct chmod command to use sudo. tinstall user has privilege,
we need to use it.

Increase dev regression timeout. Previous reduction was too much
for cm jobs.

Get more agressive on killing rouge instances. Previous change
worked in some cases, but java process apparently takes a while
to die.

Change-Id: I63d9b00b5bb5d2291784927b02eb513cc02cbec5