VSphereCloud Client accepts soap_log config as an IO
CPI response contains log

CPI logs can be used by director to display them when
requested with 'bosh task <id> --cpi'
Director saves external CPI log
Remove post install hook in vsphere CPI

External CPI is returning logs in response now for director to save it
in correct location per task
Add integration test for external cpi logs
switch to using pivotal-golang/s3cli

Signed-off-by: dmitriy kalinin <dmitriy@pivotallabs.com>
Merge final release for build 2546 to develop
Try to fail fast when not able to clean up

Signed-off-by: dmitriy kalinin <dmitriy@pivotallabs.com>
Adding final release for build 2549