Check Exception Code for Service specific error

Before checking the service specific error
we need to check that getExceptionCode returns
EX_SERVICE_SPECIFIC error code. Added a method and
used that to do the two checks together for exceptionCode
and for the service specific error code, so that we don't
repeat two lines in all the tests that need them.

EXPECT_NO_FATAL_FAILURES print the correct line number of the test
or iteration of the test when used with helper functions, and
testing guidelines recommend it too here: go/gunitadvanced#propagating-fatal-failures

Test: atest VtsHalGraphicsComposer3_TargetTest
BUG: 205152739
Change-Id: I1d3c3aa9b34dcefb14be507ff61b73b6f08a5204