Fix AKSCONFIG variable check

[mjlshen]

What this PR does

dev-infrastructure make commands weren't working because ifndef only functions outside of make targets. Now, it works as intended

[s-amann]

@mjlshen PR #113 addressed the makefile issue, can you pull down main and check if this also resolves it for you?

[mjlshen]

The intent was to not require AKSCONFIG for some targets (list, fmt, lint) #113 does fix it for the rest of the targets that should require the variable

[s-amann]

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The intent was to not require AKSCONFIG for some targets (list, fmt, lint) #113 does fix it for the rest of the targets that should require the variable

I'm able to run make lint without having AKSCONFIG set