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According to [1][2], adjust default ram and cpu for bazel,
use 25% of them for bazel build

[1] https://bazel.build/reference/command-line-reference#flag--local_ram_resources
[2] https://bazel.build/reference/command-line-reference#flag--local_cpu_resources

Signed-off-by: Hongxu Jia <hongxu.jia@eng.windriver.com>