iorap: Add handling when package manager is down.

The basic idea is that iorapd will not do prefetto trace
and prefetching in this case.

Bug: 153964298
Bug: 154243611
Test: atest iorap-functional-tests
Change-Id: Idfaac28bf5d3d3f39b790c1429a52645469e55c5
6 files changed