Removed job execution from test 163

This was not relevant to the ticket. Also, after setting a queue for
"localhost", the job will obvisouly fail. That was the error we saw in
Jenkins.
updated changelog
Adhere to the cruel log format of set_compute_unit_state.
fix for #217

The tests now require the RADICAL_PILOT_TEST_DBNAME variable to be set in the
environment. This has been added to the unit tests.

For all practical purposes this works pretty well:

RADICAL_PILOT_TEST_DBNAME=rbtest_`date | md5`
Merge branch 'devel' of github.com-oleweidner:radical-cybertools/radical.pilot into devel
updated testing instructions
updated changelog
switched india tests back to india
fixed MPI tests and agent 'CANCEL' functionality
added Andre's username as unit-tests are using his account
don't reuse existing virtual env

... this can cause all sorts of trouble.
fixed (?) mpi 4 py thing?
and changed back to 'merzky'
Less chatty.
Merge branch 'devel' of github.com:radical-cybertools/radical.pilot into devel
fix for #246
merge from devel