[YUNIKORN-387] Use Tracing to Improve YuniKorn's Observability - ASF JIRA

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We can use existing tracing framework to collect tracing information in a standardized format for scheduling and resource management. It will improve YuniKorn's observability significantly with less work. Here are our design ideas: https://docs.google.com/document/d/1MKL9SfTH8Pjw6kBM0vRnyv_ctnxBHAz-iuA7Zbux60E/edit?usp=sharing

1.	Add tracer implementation for scheduling process in the core	Closed	Weihao Zheng
2.	Inject Tracing Logic in the Core's Scheduling Procedures	Open	Weihao Zheng
3.	Add Tracing's Configuration in YAML File	Open	Unassigned
4.	Add Documents for Tracing's Usage and Configuration	Open	Unassigned
5.	Remove Jaeger dependencies and cleanup outdated traces implementation	Closed	Yu-Lin Chen