commit e95626d7b6a56ae52ed4cb5cff01048f5e426e57
author Patrick Williams <patrick@stwcx.xyz> Tue Apr 13 11:13:53 2021 -0500
committer Patrick Williams <patrick@stwcx.xyz> Tue Apr 13 11:41:07 2021 -0500
tree a2cdaf90aa580eb99c06203444217cb243179446
parent 124607f22291cc2665bd441883492882747249e5

unit-test: handle meson 0.57 optinterpreter

Starting with meson 0.57, the option intepreter code no longer holds
the options as a simple string -> option map, but instead has a new
type called an "OptionKey" which acts as the key and has no simple
conversion from string.  See this commit in meson:

    $ git tag --contains=23d3b98fc1
    0.57.0
    ...

Update the unit-test script, which utilizes the Meson optinterpreter,
to use this new OptionKey as the key to the option map lookups.

It appears that they are enhancing the option parser so that you can
get options from subprojects, different languages, and different build
targets.  We do not utilize this functionality so the defaults for
an OptionKey are what we want.

Tested: Ran the unit-test infrastructure against phosphor-power and
confirmed that "-Dtests=enabled" was passed to meson.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I285bb396a2761f69dec4a7317b6da8761ea1bea8