[BUG][opensearch]  service does not support loadBalancerClass

**Describe the bug**
A have 2 loadBalancer providers with 2 loadBalancerClass.
The chart does not allow to define the loadBalancerClass on spec

**Expected behavior**
template the loadBalancerClass

**Chart Name**
opensearch


**Host/Environment (please complete the following information):**
 - Helm Version: [3.2.2]
 - Kubernetes Version: [1.33.3]

**Additional context**


