Migrate command line args to gflgs in tests

Summary: Some other minor cleanups

Reviewers: buda

Reviewed By: buda

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D523

.ycm_extra_conf.py

@@ -25,6 +25,7 @@ BASE_FLAGS = [
     '-I./libs/googletest/googletest/include',
     '-I./libs/googletest/googlemock/include',
     '-I./libs/benchmark/include',
+    '-I./libs/rapidcheck/include',
     '-I./libs/antlr4/runtime/Cpp/runtime/src',
     '-I./build/libs/gflags/include'
 ]