Accept request parameters in RestGetRollupAction and fix flakey tests

[qreshi]

Issue #, if available:

Description of changes:

• RestGetRollupAction was not taking in parameters to be passed into GetRollupsRequest, meaning only the default values could be used
• Due to the issue above, the integration test for getting all rollups would sometimes fail if the total number of rollup jobs at the time of the test exceeded 20 as this was the default response size
• Fixed a flakey test for the stop API that led to intermittent version_conflict_exceptions since the rollup job was being updated when being disabled in between the time that the stop API was retrieving and updating the document

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

[codecov]

Codecov Report

Merging #353 (012b208) into master (e721e59) will increase coverage by 0.40%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##             master     #353      +/-   ##
============================================
+ Coverage     75.68%   76.08%   +0.40%     
- Complexity     1374     1387      +13     
============================================
  Files           183      183              
  Lines          7011     7022      +11     
  Branches       1143     1143              
============================================
+ Hits           5306     5343      +37     
+ Misses         1096     1052      -44     
- Partials        609      627      +18     

Impacted Files	Coverage Δ	Complexity Δ
...xmanagement/rollup/action/get/GetRollupsRequest.kt	100.00% <100.00%> (ø)	10.00 <1.00> (ø)
...nagement/rollup/resthandler/RestGetRollupAction.kt	95.65% <100.00%> (+3.98%)	4.00 <0.00> (ø)
...statemanagement/model/destination/CustomWebhook.kt	65.21% <0.00%> (-28.99%)	12.00% <0.00%> (-2.00%)
...indexmanagement/rollup/model/RollupFieldMapping.kt	83.33% <0.00%> (+8.33%)	7.00% <0.00%> (+1.00%)
...nt/indexstatemanagement/model/destination/Slack.kt	54.54% <0.00%> (+13.63%)	4.00% <0.00%> (+2.00%)
...xmanagement/rollup/actionfilter/FieldCapsFilter.kt	75.00% <0.00%> (+30.88%)	27.00% <0.00%> (+12.00%)

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