MGDAPI-5078 - feat: allow applying redis node size changes immediately

[KevFan]

Overview

• feat: allow applying immediately for redis node size changes
• release: 0.44.0

Jira: https://issues.redhat.com/browse/MGDAPI-5078

Verification

• Verified node size changes are apply immediately when applyImediately and maintenanceWindow is set to true on spec with @austincunningham

Checklist

• This PR includes a change to an instance type, I have used script hack/<provider>/supported_types.sh and attached the result below

[codecov]

Codecov Report

Merging #625 (5e08da4) into master (caafba3) will increase coverage by 0.01%.
The diff coverage is 100.00%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #625      +/-   ##
==========================================
+ Coverage   68.75%   68.77%   +0.01%     
==========================================
  Files          38       38              
  Lines        5115     5118       +3     
==========================================
+ Hits         3517     3520       +3     
  Misses       1238     1238              
  Partials      360      360              

Impacted Files	Coverage Δ
pkg/client/util.go	91.89% <100.00%> (+0.22%)	⬆️
pkg/providers/aws/provider_redis.go	61.64% <100.00%> (+0.05%)	⬆️

[austincunningham]

/lgtm
/approve

[openshift-ci]

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