Add list of errors to ignore when parsing for failure reason

In the reliability reports we see high counts of "fatal: '/home/iojs/.ccache/node.shared.reference' does not appear to be a git repository" but this is an error that should be ignored and it being reported is hiding whatever the real problem was.

It would be good if we could update the tooling to ignore specific errors like that.

@richardlau pointed to this area in the code as a place to start: https://github.com/nodejs/node-core-utils/blob/main/lib/ci/ci_failure_parser.js

从 lib/ci/ci_failure_parser.js（issue 中链接的区域）开始，跟踪如何从可靠性报告中提取失败原因。定义应如何表示被忽略的错误模式，并验证所引用的 ccache Git 错误不再隐藏底层失败原因。