STS DIM Url should be optional property in helm chart

[hemantxpatel]

Describe the bug

TractusX EDC allows to use either STS DIM Client or STS Remote client based on whether config tx.edc.iam.sts.dim.url is defined or not.
Chart makes it as a required property so it's not possible to use STS Remote client.

A clear and concise description of what the bug is.

tractusx-edc/charts/tractusx-connector/templates/deployment-controlplane.yaml

Lines 295 to 296 in 9bc978b

	- name: "TX_EDC_IAM_STS_DIM_URL"
	value: {{ .Values.iatp.sts.dim.url | required ".Values.iatp.sts.dim.url is required" | quote}}

To Reproduce

Steps to reproduce the behavior:

Try to deploy tractusx-edc via helm chart with dim url as null.

repository = "https://eclipse-tractusx.github.io/charts/dev"
chart      = "tractusx-connector"
version    = "0.8.0-rc1"

Error:

 Error: execution error at (tractusx-connector/templates/deployment-dataplane.yaml:219:51): .Values.iatp.sts.dim.url is required
│
│   with module.bob-connector.helm_release.connector,
│   on modules\connector\main.tf line 27, in resource "helm_release" "connector":
│   27: resource "helm_release" "connector" {

Expected behavior

A clear and concise description of what you expected to happen.

Screenshots/Error Messages

If applicable, add screenshots and/or error messages to help explain your problem.

Context Information

Add any other context or information about the problem here.

• Used version: [e.g. Commit Hash]
• OS: [e.g. Mac OS (M1), Windows, Linux]
• Docker Version: [e.g. 20.10.12]
• java --version:

Possible Implementation

You already know the root cause of the erroneous state and how to fix it? Feel free to share your thoughts.

[hemantxpatel]

Few other references in dataplane files.

• tractusx-edc/charts/tractusx-connector/templates/deployment-dataplane.yaml

  Line 219 in 9bc978b

  value: {{ .Values.iatp.sts.dim.url | required ".Values.iatp.sts.dim.url is required" | quote}}

• tractusx-edc/charts/tractusx-connector-azure-vault/templates/deployment-dataplane.yaml

  Line 223 in 9bc978b

  value: {{ .Values.iatp.sts.dim.url | required ".Values.iatp.sts.dim.url is required" | quote}}