parameterising apitest_sendgroup test
minor change
limiting SendGroup test configuration for Windows
using appropriate directive
Merge branch 'MAID-95_APITest.BEH_API_SendGroup' of github.com:mmoadeli/MaidSafe-Routing into mmoadeli-MAID-95_APITest.BEH_API_SendGroup
Fixed CMake issue with multiple lines containing INSTANTIATE_TEST_CASE_P.