Added env.tls.version property and set it to TLSv1.2

Author: Joerg Huber

SIF3InfraREST/src/test/resources/config/environment.properties

@@ -9,6 +9,12 @@
 env.store.dir=C:/Development/GitHubRepositories/SIF3InfraRest/SIF3InfraREST/src/test/resources/config/environments
 #env.store.dir=C:/DEV/eclipseWorkspace/SIF3InfraREST/config/environments
 
+# Some end-points enforce a specific TLS version such as TLSv1.2 or TLSv1.1 etc. This property kan overwrite the
+# default JVM setting which for Java 7 is TLSv1.0. It is suggested to use newer version. 
+# Valid values are: SSL (not recommended), TLSv1.0 (not recommended), TLSv1.2, TLSv1.2
+#
+env.tls.version=TLSv1.2
+
 key.store=C:/keystores/client/keystore.jks
 key.store.password=changeit
 trust.store=C:/keystores/client/cacerts.jks