Fix 97: missing testcases

Author: knewbury01

cpp/autosar/test/rules/A3-3-1/test.cpp

@@ -35,4 +35,8 @@ namespace n {
 void f5() { // COMPLIANT
   int i = 0;
 }
-} // namespace n
+} // namespace n
+
+const int c = 1;                // COMPLIANT - internal linkage
+const char *const str2 = "foo"; // COMPLIANT - internal linkage
+constexpr int k = 1;            // COMPLIANT - internal linkage