fix: ensure function syncs when inactive

[michaelhtm]

Issue #2446

Description of changes:
Currently the controller only marks a function resource as synced only
when it is active. We want to ensure we sync if it is inactive as well.

In Lambda function, inactive simply indicates that a function has been idle
for a long time, and we do not want the controller to keep requeueing
indefinitely

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[ack-prow]

@michaelhtm: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
lambda-verify-attribution	503f490	link	false	/test lambda-verify-attribution

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[a-hilaly]

/lgtm

[ack-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: a-hilaly, michaelhtm

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