Expanded repo group testcases
Added params to get() to be able to append parameters to the URL
Introduced wait_for_report() that will recursively wait for all tasks to be done

Each asyncronous call returns a call report that has list of tasks to be executed.
It can happend that task itself can have spawned tasks.
Task group api section does not exist anymore
Updated task data exmaple
Updated wait_for_report()
Introdiced from_report()
Updated testcases to comply with recent task section changes
Fixing typos
Updated tescases with new task implementation
user - data are created in method, not in test
consumer - data are created in method, not in test
no need binding_data
role - data are created in method, not in test
repo.publish - data are created in method, not in test
Updated get and list importer/distributor by updating the path
test_2_rpm_repo.py: expanded with retrieval tescases
Getting rid of the 'id' part in path of associated item
Introducing Schedule associated item
Introducing methods for generic schedule action

you can schedule: 1) a sync 2) a publish 3) content unit action