Repository API query signatures Entity free (#403)

* Migrated target management queries to IDs inetsead of full entities

Signed-off-by: kaizimmerm <kai.zimmermann@bosch-si.com>

* Added missing comment.

Signed-off-by: kaizimmerm <kai.zimmermann@bosch-si.com>

* refactored target,DS,cont,deploy,rg mangement.

Signed-off-by: kaizimmerm <kai.zimmermann@bosch-si.com>

* Adde versioning documentation.

Signed-off-by: kaizimmerm <kai.zimmermann@bosch-si.com>

* Rollout, Dist and Software mgmt refactored

Signed-off-by: kaizimmerm <kai.zimmermann@bosch-si.com>

* Readded line that was remove by incident. 

Signed-off-by: kaizimmerm <kai.zimmermann@bosch-si.com>

* Fixed broken tests.

Signed-off-by: kaizimmerm <kai.zimmermann@bosch-si.com>

* Query management refactored

Signed-off-by: kaizimmerm <kai.zimmermann@bosch-si.com>

* Fix bug of auto assign DS delete

Signed-off-by: kaizimmerm <kai.zimmermann@bosch-si.com>

* Switch to collection

Signed-off-by: kaizimmerm <kai.zimmermann@bosch-si.com>

* Fixed compile error

Signed-off-by: kaizimmerm <kai.zimmermann@bosch-si.com>

* Small glitches

Signed-off-by: kaizimmerm <kai.zimmermann@bosch-si.com>

* Fixed test after merge

Signed-off-by: kaizimmerm <kai.zimmermann@bosch-si.com>

hawkbit-dmf-api/README.md

@@ -1,4 +1,8 @@
-# HawkBit Software Provisioning device management federation API
+# hawkBit device management federation API - model definition
 
-This API is used for communicating with the HawkBit Software Provisioning server through AMQP.
-It is used to integrate other device management system through a high performance protocol. 
+This API is used for communicating with the hawkBit Update Server through AMQP.
+It is used to integrate other device management system through a high throughput protocol optimized for service to service communication. 
+
+# Version 1
+
+The model follows [semantic versioning](http://semver.org) with MAJOR version, i.e. breaking changes will result in a new MAJOR version.