Add yardstick labels symlink to gitignore (#151) #392

Job	Run time
Build snapshot artifacts	1m 40s
CLI tests (Python)	5m 7s
Static analysis	3m 43s
Discover supported schema versions	4s
Unit tests (Go)	1m 40s
Unit tests (Python)	42s
Acceptance tests (1)	12m 37s
Acceptance tests (2)	12m 53s
Acceptance tests (3)	14m 4s
Acceptance tests (4)	13m 15s
Acceptance tests (5)	13m 54s
CLI tests (Go-Linux)	1m 42s
	1h 21m 21s

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