[C++] Bump smrf version to 0.2.1
[C++] Bump smrf version to 0.2.1

Change-Id: I87529cfc00bdfea79be6653c97ec323ad905555a

bmwcarit/joynr,bmwcarit/joynr,bmwcarit/joynr,clive-jevons/joynr,bmwcarit/joynr,bmwcarit/joynr,clive-jevons/joynr,bmwcarit/joynr,bmwcarit/joynr,clive-jevons/joynr,clive-jevons/joynr,clive-jevons/joynr,bmwcarit/joynr,clive-jevons/joynr,bmwcarit/joynr