TestDriver.cxx.in: Untrusted array index read.

As reported by Coverity Scan, if the configured file contains a #include,

  Untrusted array index read
  The array index could be controlled by an attacker, leading to reads outside
  the bounds of the array.
  In main: Read from array at index computed using an unscrutinized value from
  an untrusted source (CWE-129)

  CID 1081283 (#1 of 1): Untrusted array index read (TAINTED_SCALAR)
  25. tainted_data: Using tainted variable "testToRun" as an index into an array
  "cmakeGeneratedFunctionMapEntries".
Merge topic 'coverity-generated-tests' into next

7eddefd TestDriver.cxx.in: Untrusted array index read.