Support implicit filter generation for multi-tenant table

[navis]

navis@navisui-MacBook-Pro:druid % cat conf/druid/broker/multitenants.properties
lineitem=L_LINENUMBER

sql> select L_ORDERKEY, L_LINENUMBER from lineitem_1 limit 3;
  [L_ORDERKEY, L_LINENUMBER]
  --------------------------
  [1018657, 1]
  [1024647, 1]
  [1025121, 1]
> Retrieved 3 rows in 33 msec
sql> select L_ORDERKEY, L_LINENUMBER from lineitem_2 limit 3;
  [L_ORDERKEY, L_LINENUMBER]
  --------------------------
  [1007297, 2]
  [1037760, 2]
  [1046656, 2]
> Retrieved 3 rows in 31 msec
sql> select L_ORDERKEY, L_LINENUMBER from lineitem_3 limit 3;
  [L_ORDERKEY, L_LINENUMBER]
  --------------------------
  [1040162, 3]
  [1079462, 3]
  [1098053, 3]
> Retrieved 3 rows in 35 msec
sql> explain plan for select L_ORDERKEY, L_LINENUMBER from lineitem_3 limit 3;
  [PLAN]
  ------
  [DruidQueryRel(table=[druid.lineitem_3], scanFilter=[=($4, '3')], scanProject=[$6, $4], fetch=[3])
]
> Retrieved 1 rows in 27 msec
sql> explain plan with implementation for select L_ORDERKEY, L_LINENUMBER from lineitem_3 limit 3;
  [PLAN]
  ------
  [{
  "queryType" : "select.stream",
  "dataSource" : {
    "type" : "table",
    "name" : "lineitem"
  },
  "descending" : false,
  "filter" : {
    "type" : "selector",
    "dimension" : "L_LINENUMBER",
    "value" : "3"
  },
  "columns" : [ "L_ORDERKEY", "L_LINENUMBER" ],
  "limitSpec" : {
    "type" : "default",
    "limit" : 3
  },
  "context" : {
    "groupby.sort.on.time" : false
  }
}]
> Retrieved 1 rows in 16 msec
sql>