otachroot apexd: keep going even if we failed to activate some apexes

Some of the apexes are not really required for a successful run of
otachroot, so we should try to activate as many apexes as we can and let
otachroot decide whether it can proceed.

Test: atest ApexTestCases
Bug: 181182967
Change-Id: Ide73ddcbe1b896b3208addf4d8588967866bf618
2 files changed