qa/suites/crimson-rados: add seastore test case

Signed-off-by: chunmei-liu <chunmei.liu@intel.com>

qa/suites/crimson-rados/seastore/basic/.qa

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+../../.qa/

qa/suites/crimson-rados/seastore/basic/centos_latest.yaml

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+.qa/distros/supported/centos_latest.yaml

qa/suites/crimson-rados/seastore/basic/clusters/.qa

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+../.qa/

qa/suites/crimson-rados/seastore/basic/clusters/fixed-2.yaml

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+roles:
+- [mon.a, osd.0, osd.1, client.0, node-exporter.a]
+- [mgr.x, osd.2, osd.3, client.1, prometheus.a, node-exporter.b]
+overrides:
+  ceph:
+    conf:
+      osd:
+        osd shutdown pgref assert: true
+      global:
+        ms cluster mode: crc
+        ms service mode: crc
+        ms client mode: crc
+        ms mon service mode: crc
+        ms mon cluster mode: crc
+        ms mon client mode: crc

qa/suites/crimson-rados/seastore/basic/deploy/.qa

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+../.qa/

qa/suites/crimson-rados/seastore/basic/deploy/ceph.yaml

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+overrides:
+  install:
+    ceph:
+      flavor: crimson
+tasks:
+- install:
+- ceph:
+    conf:
+      osd:
+        debug monc: 20
+      mon:
+        mon min osdmap epochs: 50
+        paxos service trim min: 10
+        # prune full osdmaps regularly
+        mon osdmap full prune min: 15
+        mon osdmap full prune interval: 2
+        mon osdmap full prune txsize: 2
+    flavor: crimson

qa/suites/crimson-rados/seastore/basic/objectstore/.qa

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+../.qa/

qa/suites/crimson-rados/seastore/basic/objectstore/seastore.yaml

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+overrides:
+  ceph:
+    fs: xfs
+    conf:
+      osd:
+        osd objectstore: seastore

qa/suites/crimson-rados/seastore/basic/tasks/.qa

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+../.qa/

qa/suites/crimson-rados/seastore/basic/tasks/readwrite.yaml

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+overrides:
+  ceph:
+    crush_tunables: optimal
+    conf:
+      mon:
+        mon osd initial require min compat client: luminous
+      osd:
+        osd_discard_disconnected_ops: false
+tasks:
+- rados:
+    clients: [client.0]
+    ops: 4000
+    objects: 500
+    op_weights:
+      read: 45
+      write: 45
+      delete: 10