feat: WATCH_NAMESPACE support multi namespace #18

Job	Run time
container_quality_dockerfile_lint	9s
lint	1m 1s
build_scan_container_image	10m 36s
Go Test	6m 45s
build_go_binary (amd64)	52s
build_go_binary (arm64)	56s
gosec_scan	12s
Validate YAML	12s
./tests/e2e-chainsaw/v1beta2/teardown/	5m 43s
./tests/e2e-chainsaw/v1beta2/setup/	6m 36s
./tests/e2e-chainsaw/v1beta2/hostnetwork/	10m 41s
./tests/e2e-chainsaw/v1beta2/password/	10m 37s
./tests/e2e-chainsaw/v1beta2/ha-setup/	10m 4s
./tests/e2e-chainsaw/v1beta2/ha-failover/	9m 33s
./tests/e2e-chainsaw/v1beta2/nodeport/	10m 43s
./tests/e2e-chainsaw/v1beta2/pvc-name/	6m 33s
./tests/e2e-chainsaw/v1beta2/keep-pvc/	5m 36s
./tests/e2e-chainsaw/v1beta2/acl-user/	10m 38s
./tests/e2e-chainsaw/v1beta2/scaling/	16m 48s
./tests/e2e-chainsaw/v1beta2/ignore-annots/	5m 30s
	2h 9m 45s

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