[fix-ranking] Fix for calculateInstalledRank query

[tavomaciel]

Avoids the following error during migrations:

TRACE [Native-Transport-Requests-1] 2017-06-02 08:14:19,284 Message.java:516 - Received: QUERY UPDATE eagles_nest.cassandra_migration_version_counts SET count = count + 1WHERE name = 'installed_rank';[pageSize = 5000], v=4/v4
TRACE [Native-Transport-Requests-1] 2017-06-02 08:14:19,285 Tracing.java:188 - request complete
TRACE [Native-Transport-Requests-1] 2017-06-02 08:14:19,285 Message.java:535 - Responding: ERROR SYNTAX_ERROR: line 1:76 mismatched input 'HERE' expecting K_WHERE (... count = count + 1W[HERE]...), v=4/v4