Charts doesn't support clusters with untainted nodes

[demeesterdev]

Hi,

I have a cluster running that uses taints on all nodes to force isolation of workloads and namespaces.
We cannot use this chart to run SigNoz on that cluster because the schema-migrator template doesn't allow configuring nodes lectors and taints.

We would love for this to be included into this chart to enable us to use signoz from code.