Allow users to set local RAM and CPU available to Blaze relative to host capacity.
Two new flags, --local_ram_resources and --local_cpu_resouces, which take a value or "HOST_{ram,cpus}" optionally followed by [-|*]<float>, will replace --ram_utilization_factor and --local_resouces in the future. Right now the flags exist in conjunction with each other, with --local_resources taking precedence, then --ram_utilization_factor, then --local_{ram,cpu}_resources.
RELNOTES:
Introduces --local_{ram,cpu}_resources, which will take the place of --local_resources.
PiperOrigin-RevId: 228523496
{Fast, Correct} - Choose two
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