qa: use bluestore for cephfs cephtool tests

This lets the tests enable ec overwrites

Signed-off-by: Josh Durgin <jdurgin@redhat.com>

src/test/cephtool-test-mds.sh

@@ -18,7 +18,7 @@
 source $(dirname $0)/detect-build-env-vars.sh
 
 CEPH_CLI_TEST_DUP_COMMAND=1 \
-MDS=1 MON=1 OSD=3 MGR=0 CEPH_PORT=7200 $CEPH_ROOT/src/test/vstart_wrapper.sh \
+MDS=1 MON=1 OSD=3 MGR=0 CEPH_PORT=7200 CEPH_OBJECTSTORE="bluestore" $CEPH_ROOT/src/test/vstart_wrapper.sh \
     $CEPH_ROOT/qa/workunits/cephtool/test.sh \
     --test-mds \
     --asok-does-not-need-root

src/test/vstart_wrapper.sh

@@ -30,8 +30,13 @@ function vstart_setup()
     trap "teardown $CEPH_DIR" EXIT
     export LC_ALL=C # some tests are vulnerable to i18n
     export PATH="$(pwd):${PATH}"
+    OBJSTORE_ARGS=""
+    if [ "bluestore" = "${CEPH_OBJECTSTORE}" ]; then
+        OBJSTORE_ARGS="-b"
+    fi
     $CEPH_ROOT/src/vstart.sh \
         --short \
+        $OBJSTORE_ARGS \
         -o 'paxos propose interval = 0.01' \
         -n -l || return 1
     export CEPH_CONF=$CEPH_DIR/ceph.conf