Use standard loading code in many tests

In order to prepare for use in CTS tests make tests 902, 914, 915,
917, 919, 926, 930, 932, 940, 942, 945, 981 & 982 use standard OnLoad
functions. Final configuration is done during test initialization.

Bug: 32072923
Test: ./test/testrunner/testrunner.py --host -j40
Change-Id: I84b2e17d0e024255d2dc49452f3d74dfd64abd22
48 files changed