[DMAAP] Replace aafConfig with certInitializer

Use cert initializer instead of aafConfig to keep dmaap-dr-node
aligned with the rest of ONAP

Issue-ID: OOM-1
Signed-off-by: Krzysztof Opasiak <k.opasiak@samsung.com>
Change-Id: I2b73e87bb8ae011416555216605ade9a6316261e
4 files changed