Update file watcher to only monitor directories referenced in the nginx configuration #5268

Job	Run time
Lint	4m 33s
Unit tests with race condition detection	2m 43s
Performance Tests	5m 3s
Build Unsigned Snapshot	2m 20s
Unit Tests	2m 27s
Integration Tests (redhatenterprise, 9)	8m 58s
Load Tests	4m 50s
Integration Tests - Official OSS Images (bookworm, mainline, debian)	7m 48s
Integration Tests - Official Plus Images (debian, bookworm, r31, debian, /nginx-plus/agent)	7m 41s
Integration Tests - Official OSS Images (bookworm, stable, debian)	7m 50s
Integration Tests - Official OSS Images (alpine, stable, alpine)	7m 25s
Integration Tests - Official OSS Images (alpine, mainline, alpine)	7m 30s
Integration Tests - Official Plus Images (alpine, 3.19, r31, alpine, /nginx-plus/agent)	7m 23s
Integration Tests - Official Plus Images (debian, bookworm, r32, debian, /nginx-plus/agent)	7m 57s
Integration Tests (alpine, 3.19)	7m 11s
Integration Tests - Official Plus Images (alpine, 3.20, r32, alpine, /nginx-plus/agent)	7m 23s
	1h 39m 2s

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