Refactor hawkbit core and security (#2833)

* Refactor hawkbit core and security

* improve access to the base core features - static
* thus easiear access
* and less boilerplate passing of instances

Signed-off-by: Avgustin Marinov <Avgustin.Marinov@bosch.com>

* Refactor context classes

* make JSON context serialization default

* AccessContext

* Split hawkbit-security-core to other modules and remove it

---------

Signed-off-by: Avgustin Marinov <Avgustin.Marinov@bosch.com>

hawkbit-rest-core/pom.xml

@@ -27,11 +27,6 @@
             <artifactId>hawkbit-core</artifactId>
             <version>${project.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.eclipse.hawkbit</groupId>
-            <artifactId>hawkbit-security-core</artifactId>
-            <version>${project.version}</version>
-        </dependency>
         <dependency>
             <groupId>org.eclipse.hawkbit</groupId>
             <artifactId>hawkbit-artifact-api</artifactId>
@@ -42,6 +37,10 @@
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-web</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.springframework.security</groupId>
+            <artifactId>spring-security-web</artifactId>
+        </dependency>
         <dependency>
             <groupId>org.springframework.hateoas</groupId>
             <artifactId>spring-hateoas</artifactId>