making .ReleaseIsInstall optional for init jobs #203

Job	Run time
Preconditions	9s
License Check	11s
chart-testing lint	44s
Upgrade latest released version - k8s 1.21.14 - upgrade	6m 5s
Use Pulsar Image - k8s 1.21.14 - install	6m 18s
JWT Asymmetric Keys - k8s 1.21.14 - install	6m 52s
JWT Symmetric Key - k8s 1.21.14 - install	5m 47s
TLS - k8s 1.21.14 - install	7m 8s
Broker & Proxy TLS - k8s 1.21.14 - install	6m 7s
BK TLS Only - k8s 1.21.14 - install	6m 45s
ZK TLS Only - k8s 1.21.14 - install	7m 22s
ZK & BK TLS Only - k8s 1.21.14 - install	6m 12s
PSP - k8s 1.21.14 - install	6m 21s
Pulsar Manager - k8s 1.21.14 - install	6m 48s
Upgrade latest released version - k8s 1.27.3 - upgrade	5m 34s
Use Pulsar Image - k8s 1.27.3 - install	6m 0s
JWT Asymmetric Keys - k8s 1.27.3 - install	6m 10s
JWT Symmetric Key - k8s 1.27.3 - install	6m 14s
TLS - k8s 1.27.3 - install	6m 2s
Broker & Proxy TLS - k8s 1.27.3 - install	5m 53s
BK TLS Only - k8s 1.27.3 - install	6m 17s
ZK TLS Only - k8s 1.27.3 - install	6m 29s
ZK & BK TLS Only - k8s 1.27.3 - install	5m 59s
PSP - k8s 1.27.3 - install	5m 56s
Pulsar Manager - k8s 1.27.3 - install	6m 12s
Upgrade TLS - k8s 1.21.14 - upgrade	7m 14s
Upgrade PSP - k8s 1.21.14 - upgrade	5m 59s
Upgrade kube-prometheus-stack - k8s 1.21.14 - upgrade	9m 48s
TLS with helm 3.10.0 - k8s 1.21.14 - install	7m 25s
CI checks completed	1s
	2h 50m 2s

Provide feedback