Honor suspend/pause config switches in scenario tests

Some tests missed checking for compute features as
set in compute-feature-enabled section in tempest.conf.

Reduce double-coverage of pause/suspend tests between
basic and advanced server tests by removing pause and
suspend actions in basic ops test.

Closes-bug: 1296858

Change-Id: I80d785bb5b325ccfac3c5cfd9d076718cf587e80
Merge "Honor suspend/pause config switches in scenario tests"