Update credential watcher to allow second credential watcher #5359

Job	Run time
Unit tests with race condition detection	2m 48s
Lint	4m 46s
Build Unsigned Snapshot	2m 1s
Unit Tests	2m 25s
Performance Tests	7m 10s
Integration Tests (alpine, 3.19)	6m 57s
Integration Tests - Official OSS Images (bookworm, mainline, debian)	7m 32s
Integration Tests (redhatenterprise, 9)	8m 39s
Integration Tests - Official OSS Images (bookworm, stable, debian)	7m 26s
Integration Tests - Official OSS Images (alpine, mainline, alpine)	7m 8s
Integration Tests - Official Plus Images (alpine, 3.19, r31, alpine, /nginx-plus/agent)	7m 19s
Integration Tests - Official Plus Images (alpine, 3.20, r32, alpine, /nginx-plus/agent)	7m 18s
Load Tests	19m 29s
Integration Tests - Official Plus Images (debian, bookworm, r31, debian, /nginx-plus/agent)	7m 40s
Integration Tests - Official Plus Images (debian, bookworm, r32, debian, /nginx-plus/agent)	7m 42s
Integration Tests - Official OSS Images (alpine, stable, alpine)	7m 16s
	1h 53m 36s

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