test: Make most tests use default objectstore bluestore

test: Make most tests use default objectstore bluestore

Change run_osd() to default objectstore bluestore
Use run_osd_filestore() to use the non-default objectstore
Fix inject_eio to handle any objectstore if config prefixed with type

Remaining tests using filestore:
	osd-pool-create.sh TEST_pool_create_rep_expected_num_objects
		Test filestore directory creation
	qa/standalone/osd/osd-dup.sh TEST_filestore_to_bluestore
		Obvious
	qa/standalone/osd/osd-rep-recov-eio.sh TEST_rep_read_unfound
		Requires data digest in object info
	qa/standalone/scrub/osd-scrub-repair.sh multiple tests
		Erasure code pools append mode for filestore is tested
	qa/standalone/special/ceph_objectstore_tool.py
		Test code verifies COT by directly examining filestore contents

Fixes: https://tracker.ceph.com/issues/39162
Signed-off-by: David Zafman <dzafman@redhat.com>