Fixed Sonar issues:
- change the HasMap to more optimized(in this case) EnumMap in GuardPolicyAttributesConstructor
- remove no necessary casting in the TcaRequestFormatter
- remove not used value in the DcaeDispatcherServices
Additionally correct javadoc in PolicyClient.
Change-Id: I6435fe093248073fee9749366e98d5720a8fe375
Issue-ID: CLAMP-346
Signed-off-by: Krystian Kedron <k.kedron@partner.samsung.com>