serializer fields and their validation
ssh public key added to provisioning tests
ssh public key added to scenarios tests
ssh public key factory
ssh_public_key field added to instance model
InstanceCreateSerializer validate_ssh_public_key test added
trailing space deleted
user added to serializer context
get_serializer_context method test
Merge branch 'develop' of code.opennodecloud.com:nodeconductor/nodeconductor into feature/nc-129
ssh public key field added to docs
raise Http404 if public key does not belong to user
validate_ssh_public_key test corrected
Extend docstring TODOs
Cleanup docs
Merge branch 'feature/nc-129' into 'develop'

Feature/nc 129