RTS SRA uses too more dependencies than needed and causes the thorntail jar being bigger than necessary

The current definition of pom.xml for rts/sra project defines the dependency on all microprofile fractions from Thorntail. It depends on fractions which are not used in the project. This makes the result jar bigger than necessary (it's 81MB big).
The definition should consider only fractions which are about to be used in the project and thus the result jar could be around 60MB.