Allow partial specification for deeply nested inventories

For objects that are not simple attributes of the resource (i.e.
objects, lists) allow specifing subset of values that needs to be
verified.

In case of lists, count of list objects must match, but if values are
objects / dicts, they can be specified as empty dicts which should pass
all the checks, as no keys are specified.

Merge pull request GoogleCloudPlatform#1703 from luigi-bitonti/luigi-…

…bitonti/cf_bug_fix

Add bug fix to allow to use Secret Manager secrets to mount files in …

Merge pull request GoogleCloudPlatform#1701 from GoogleCloudPlatform/…

…ludo/issue-1700

Add support for default nodepool sa in GKE cluster module

update changelog

Add deletion_protection_enabled attribute to cloudsql-instance to ena…

…ble the GCP native deletion protection flag (GoogleCloudPlatform#1696)

Merge pull request GoogleCloudPlatform#1694 from eddern/eddern/fix-ap…

…igee-addons-config

Fix apigee addons config conditional expression

update changelog

fix repd disk attachment in compute-vm module (GoogleCloudPlatform#1688)

Merge pull request GoogleCloudPlatform#1687 from GoogleCloudPlatform/…

…jccb/document-iam-variables

Add IAM variables template to ADR

CONTRIBUTING guide: fix broken links and update "running tests for sp…

…ecific examples" section (GoogleCloudPlatform#1686)

* CONTRIBUTING guide: fix links to section headers

* CONTRIBUTING guide: correct and expand the running tests for examples section