Add spec.metadata.pemContents to MySQL/MariaDB Binding

[edwardfward]

What content needs to be created or modified?

MySQL & MariaDB binding

Add spec.metadata.pemContents to the component format as follows.

apiVersion: dapr.io/v1alpha1
kind: Component
metadata:
  name: <NAME>
spec:
  type: bindings.mysql
  version: v1
  metadata:
    - name: url # Required, define DB connection in DSN format
      value: "<CONNECTION_STRING>"
    - name: pemPath # Optional
      value: "<PEM PATH>"
    - name: pemContents # Optional
      value: "<PEM CONTENTS>"
    - name: maxIdleConns
      value: "<MAX_IDLE_CONNECTIONS>"
    - name: maxOpenConns
      value: "<MAX_OPEN_CONNECTIONS>"
    - name: connMaxLifetime
      value: "<CONNECTION_MAX_LIFE_TIME>"
    - name: connMaxIdleTime
      value: "<CONNECTION_MAX_IDLE_TIME>"

Add pemContents to spec metadata fields.

Field	Required	Binding support	Details	Example
pemContents	N	Output	Contents of PEM file. Used with SSL connection. Supersedes pemPath	"-----BEGIN CERTIFICATE----- MIIFaDCCBFCgAwIBAgISESHkvZFwK9Qz0KsXD3x8p44aMA0GCSqGSIb3DQEBCwUA ... bbml6YXRpb252YWxzaGEyZzIuY3JsMIGgBggrBgEFBQcBAQSBkzCBkDBNBggrBgEF -----END CERTIFICATE-----"

Describe the solution you'd like

Adjust documentation to cover spec.metadata.pemContents

Where should the new material be placed?

MySQL & MariaDB binding in existing tables.

The associated pull request from dapr/dapr, dapr/components-contrib, or other Dapr code repos

Adding spec.metadata.pemContents to MySQL Binding #3620

Additional context

No additional context to provide.