[target-allocator] Add allocation strategy to distribute targets per node #3

Job	Run time
End-to-end tests (1.23, e2e)	8m 15s
End-to-end tests (1.23, e2e-instrumentation)	8m 26s
End-to-end tests (1.23, e2e-upgrade)	5m 53s
End-to-end tests (1.23, e2e-prometheuscr)	6m 9s
End-to-end tests (1.23, e2e-autoscale)	5m 34s
End-to-end tests (1.23, e2e-multi-instrumentation)	6m 29s
End-to-end tests (1.23, e2e-pdb)	5m 17s
End-to-end tests (1.23, e2e-opampbridge)	5m 21s
End-to-end tests (1.28, e2e)	6m 49s
End-to-end tests (1.28, e2e-instrumentation)	6m 26s
End-to-end tests (1.28, e2e-upgrade)	5m 32s
End-to-end tests (1.28, e2e-prometheuscr)	6m 19s
End-to-end tests (1.28, e2e-autoscale)	5m 16s
End-to-end tests (1.28, e2e-multi-instrumentation)	6m 12s
End-to-end tests (1.28, e2e-pdb)	5m 11s
End-to-end tests (1.28, e2e-opampbridge)	5m 52s
e2e-tests-check	1s
	1h 39m 2s

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