Remove hardcoded ENTRYPOINT

[edevosc2c]

Essential:

• https://github.com/georchestra/helm-georchestra/blob/main/templates/geonetwork/geonetwork-deployment.yaml#L48
• https://github.com/georchestra/helm-georchestra/blob/main/templates/geoserver/geoserver-deployment.yaml#L43
• https://github.com/georchestra/helm-georchestra/blob/main/templates/cas/cas-deployment.yaml#L35

Optional

• https://github.com/georchestra/helm-georchestra/blob/main/templates/security-proxy/security-proxy-deployment.yaml#L137
• https://github.com/georchestra/helm-georchestra/blob/main/templates/geoserver/geoserver-deployment.yaml#L189

[edevosc2c]

fixed for geonetwork and was fixed at one point of the others