Replication with query

[furushchev]

Closes #219 Please merge #218 first before this pull request.

• Added a query slot to mongodb_store_msgs/MoveEntriesGoal to filtering moved entries to extra servers
• Added test code for replication with query
• Added --query optional argument to replicator_client.py

usage: replicator_client.py [-h] [--move-before MOVE_BEFORE]
                            [--delete-after-move] [--query QUERY]
                            database collection [collection ...]

positional arguments:
  database              The db to move entries from
  collection            The collections to move entries from

optional arguments:
  -h, --help            show this help message and exit
  --move-before MOVE_BEFORE
                        Only entries before rospy.Time.now() - move_before are
                        moved. if 0, all are moved
  --delete-after-move   Delete moved entries after replication
  --query QUERY, -q QUERY
                        Only entries that are matched by the query are moved.

[hawesie]

retest please

[hawesie]

ok to test

[hawesie]

@furushchev should these tests pass now #218 has been merged?

[furushchev]

@hawesie No, some update was necessary for #218, I'll now update this pull request again. :+1:

[furushchev]

@hawesie Now updated and now passed all tests.