runner_cfg not recognized when preceded by optional "constant" keyword

[tristanitschner]

Example: (shamelessly copied and adjusted from the provided examples)

library vunit_lib;
context vunit_lib.vunit_context;

entity tb_minimal is
  generic (constant runner_cfg : string := runner_cfg_default);
end entity;

architecture tb of tb_minimal is
begin
  test_runner : process
  begin
    test_runner_setup(runner, runner_cfg);
    check_equal(to_string(17), "17");
    test_runner_cleanup(runner);
  end process;
end architecture;

run.py:

from pathlib import Path
from vunit import VUnit

ROOT = Path(__file__).parent

VU = VUnit.from_argv()

LIB = VU.add_library("lib")
LIB.add_source_files(ROOT / "*.vhd")

VU.main()

Command used:

./run.py

Result:

WARNING - Entity tb_minimal matches testbench name regex ^(tb_.*)|(.*_tb)$ but has no generic runner_cfg and will therefore not be run.
in file /home/git/vunit/examples/vhdl/my_run/tb_minimal.vhd
WARNING - Found no test benches using current filter rule:

    Filters entities and modules that have a runner_cfg generic/parameter

    Gives warning when design_unit matches tb_* or *_tb without having a runner_cfg
    Gives warning when a design_unit has  a runner_cfg but the name does not match tb_* or *_tb
    
Re-compile not needed

No tests were run!

Expected result:
Per § 6.5.2 and section 6.5.6.1 of the VHDL 2008 LRM the constant keyword is optional in an constant interface declaration list of which a generic clause may be composed and thus VUnit should recognize it.

[LarsAsplund]

@tristanitschner This should have been fixed now. Give it a try.