Rename get/setRetryInterval to get/setRetryIntervalsMs

Per API feedback, the get/set methods for retry intervals are renamed to
be plural, and have time units

Bug: 184612525
Test: atest FrameworksVcnTests
Test: atest CtsVcnTestCases
Change-Id: I51b3ffcfa44f72805f359e56b263da2558325372
4 files changed