Remove hard-coded subdirectory paths for configs

Previously, the subdirectories in which the sub-json files were searched
in were hardcoded. Now, DRAMSys simply searches in the directory of the
base config, making this approach more flexible.

tests/tests_configuration/test_configuration.cpp

@@ -288,12 +288,6 @@ TEST_F(ConfigurationTest, DumpConfiguration)
     std::cout << json.dump(4) << std::endl;
 }
 
-TEST(Configuration, ResourceDirectory)
-{
-    // Test should not throw exceptions
-    Configuration config = from_path("resources/ddr5-example.json");
-}
-
 TEST(Configuration, FromPath)
 {
     // Test should not throw exceptions

tests/tests_regression/DDR3/ddr3-example.json

@@ -135,7 +135,7 @@
         "tracesetup": [
             {
                 "clkMhz": 533,
-                "name": "trace_test2.stl"
+                "name": "traces/trace_test2.stl"
             }
         ]
     }

tests/tests_regression/DDR4/ddr4-example.json

@@ -146,7 +146,7 @@
         "tracesetup": [
             {
                 "clkMhz": 933,
-                "name": "trace_test3.stl"
+                "name": "traces/trace_test3.stl"
             }
         ]
     }

tests/tests_regression/DDR5/ddr5-example.json

@@ -158,7 +158,7 @@
         "tracesetup": [
             {
                 "clkMhz": 1600,
-                "name": "trace_test3.stl"
+                "name": "traces/trace_test3.stl"
             }
         ]
     }

tests/tests_regression/HBM2/hbm2-example.json

@@ -126,11 +126,11 @@
         "tracesetup": [
             {
                 "clkMhz": 1000,
-                "name": "trace1_test4.stl"
+                "name": "traces/trace1_test4.stl"
             },
 	    {
                 "clkMhz": 1000,
-                "name": "trace2_test4.stl"
+                "name": "traces/trace2_test4.stl"
             }
         ]
     }

tests/tests_regression/HBM3/hbm3-example.json

@@ -129,11 +129,11 @@
         "tracesetup": [
             {
                 "clkMhz": 1600,
-                "name": "trace1_test4.stl"
+                "name": "traces/trace1_test4.stl"
             },
 	    {
                 "clkMhz": 1600,
-                "name": "trace2_test4.stl"
+                "name": "traces/trace2_test4.stl"
             }
         ]
     }

tests/tests_regression/LPDDR4/lpddr4-example.json

@@ -123,7 +123,7 @@
         "tracesetup": [
             {
                 "clkMhz": 1600,
-                "name": "trace_lpddr4.stl"
+                "name": "traces/trace_lpddr4.stl"
             }
         ]
     }

tests/tests_regression/LPDDR5/lpddr5-example.json

@@ -134,7 +134,7 @@
         "tracesetup": [
             {
                 "clkMhz": 1600,
-                "name": "trace_lpddr5.stl"
+                "name": "traces/trace_lpddr5.stl"
             }
         ]
     }