0.0.6.2: Update Get-RsRestCacheRefreshPlanHistory.Tests.ps1 (#317)
* Update Get-RsRestCacheRefreshPlanHistory.Tests.ps1
Increased Start-Sleep duration from 3 seconds to 6 seconds, to allow time for subscription to run and have history to display.
* Swapped out the Start-Sleep for a While loop.
Swapped out the second Start-Sleep for a While loop.
* Swapped out the other Start-Sleep.
Swapped out the other Start-Sleep.
* Moved break condition for count inside while parens.
Moved break condition for count inside while parens.