Replace system() calls with the euca_execlp() call where possible
EUCA-7575
Fix compilation warnings after my last merge :(
EUCA-7575
Merge remote-tracking branch 'origin/testing' into testing
Admin script for registration of user facing services - OSG - EUCA-8710

Missed the object storage gateway service.

EUCA-8710
EUCA-6888: continued refactoring and lifecycle implementaion of import-volume task
Plug leaky impersonation context - EUCA-8742

The impersonation context is updated to cover the administrator check
and subject / credential methods.

EUCA-8742
Binding fix for modify image attribute - EUCA-8747

EUCA-8747
Binding fixes for describe image/instance attribute - EUCA-8748

EUCA-8748