Change GetProcesses to only return nginx processes & fix get Instances #2974

Job	Run time
Unit tests with race condition detection	1m 31s
Unit tests with race condition detection	1m 31s
Unit Tests	1m 24s
Unit Tests	1m 12s
Lint	2m 14s
Lint	2m 14s
Build Unsigned Snapshot	40s
Build Unsigned Snapshot	40s
Performance Tests	2m 10s
Performance Tests	2m 10s
Integration Tests (ubuntu, 22.04)	1m 37s
Integration Tests (ubuntu, 22.04)	1m 37s
Generate Profile	3m 17s
Generate Profile	3m 17s
Integration Tests (redhatenterprise, 9)	1m 39s
Integration Tests (redhatenterprise, 9)	1m 39s
Integration Tests (alpine, 3.19)	1m 12s
Integration Tests (alpine, 3.19)	1m 12s
	31m 16s

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