Full AWS gp3 support for iops and througput config. (#1261)

Support new AWS EBS volume type `gp3` with `iops` and `throughput` in the manifest.

Co-authored-by: Felix Kunde <felix-kunde@gmx.de>

charts/postgres-operator/crds/postgresqls.yaml

@@ -557,6 +557,8 @@ spec:
                 required:
                   - size
                 properties:
+                  iops:
+                    type: integer
                   size:
                     type: string
                     pattern: '^(\d+(e\d+)?|\d+(\.\d+)?(e\d+)?[EPTGMK]i?)$'
@@ -565,6 +567,8 @@ spec:
                     type: string
                   subPath:
                     type: string
+                  throughput:
+                    type: integer
           status:
             type: object
             additionalProperties: