merge EnvVariables with Rest

...ain/java/theodolite/commons/beam/AbstractBeamService.java

...rks/buildSrc/src/main/groovy/theodolite.beam.samza.gradle

...-benchmarks/docker-test/uc1-beam-samza/docker-compose.yml

...-benchmarks/docker-test/uc2-beam-samza/docker-compose.yml

...-benchmarks/docker-test/uc3-beam-samza/docker-compose.yml

...-benchmarks/docker-test/uc4-beam-samza/docker-compose.yml

theodolite-benchmarks/uc1-beam-samza/Dockerfile

...ite-benchmarks/uc1-beam-samza/samza-standalone.properties

...c1-beam-samza/src/main/java/application/Uc1BeamSamza.java

theodolite-benchmarks/uc2-beam-samza/Dockerfile

...ite-benchmarks/uc2-beam-samza/samza-standalone.properties

theodolite-benchmarks/uc3-beam-samza/Dockerfile

...ite-benchmarks/uc3-beam-samza/samza-standalone.properties

theodolite-benchmarks/uc4-beam-samza/Dockerfile

...ite-benchmarks/uc4-beam-samza/samza-standalone.properties