wifi-scripts: various minor fixes to the new ucode scripts #2814

Job	Run time
Build all core packages for selected target / Determine Changed Files / Determine Changed Files	6s
Build all core packages for selected target / Determine Changed Packages / Determine Changed Packages	5s
Build all core packages for selected target / Build Packages with external toolchain (malta, be) / Set up build malta/be	5s
Build all core packages for selected target / Build Packages with external toolchain (x86, 64) / Set up build x86/64	8s
Build all core packages for selected target / Build Packages with external toolchain (malta, be) / Build malta/be	1h 19m 7s
Build all core packages for selected target / Build Packages with external toolchain (malta, be) / Check packages for malta/be	2m 58s
Build all core packages for selected target / Build Packages with external toolchain (x86, 64) / Build x86/64	1h 21m 14s
Build all core packages for selected target / Build Packages with external toolchain (x86, 64) / Check packages for x86/64	3m 3s
Build all core packages for selected target / Upload ccache cache to s3	0s
	2h 46m 46s

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