Upgrade to Operator SDK 1.16.0

[rooftopcellist]

SUMMARY

Upgrades Operator SDK from v1.12 --> v1.16 and updates base image.

Notable changes:

• operator-registry version upgraded
• backup & restore sample CR yaml and test stubs were added
• scorecard tests were updated
• The following CRD files were renamed (CRD names stay the same)

 rename config/crd/bases/{awxbackup.ansible.com_awxbackups.yaml => awx.ansible.com_awxbackups.yaml} (100%)
 rename config/crd/bases/{awxrestore.ansible.com_awxrestores.yaml => awx.ansible.com_awxrestores.yaml} (100%)

• Added yamllint rule exceptions. Indentation need only be consistent, 3 hypens at document-start are not required in all cases, and comment indentation is disabled.

+  document-start: disable
+  comments-indentation: disable
+  indentation:
+    level: warning
+    indent-sequences: consistent