SERVER-11995 Remove redundant addStatus in favor of appendCommandStatus.
SERVER-10026 check for comparison match expressions with regex during parsing

Signed-off-by: Matt Kangas <matt.kangas@mongodb.com>
SERVER-12214 Make WriteResult in the shell adhere to write command spec
SERVER-12035 Allow the clusterMonitor role to read local.system.replset
SERVER-12035 Allow clusterMonitor role to get the current profiling level