tests: add logrotate tests for out_file plugin

Signed-off-by: SagiROosto <sagi.rosenthal@oosto.com>

Author: SagiROosto

tests/runtime/CMakeLists.txt

@@ -255,6 +255,7 @@ if(FLB_IN_LIB)
     # These plugins work only on Linux
   if(NOT FLB_SYSTEM_WINDOWS)
     FLB_RT_TEST(FLB_OUT_FILE              "out_file.c")
+    FLB_RT_TEST(FLB_OUT_FILE    "out_file_logrotate.c")
   endif()
   FLB_RT_TEST(FLB_OUT_S3                "out_s3.c")
   FLB_RT_TEST(FLB_OUT_TD                "out_td.c")