ENG-14470: Fix usage of variable ExportDataSource.m_runEveryWhere
ENG-14470: Fix usage of variable ExportDataSource.m_runEveryWhere

m_runEveryWhere could be set but setOnMastership or setRunEveryWhere but
was actually not being updated by setOnMastership. Update
setOnMastership to call setRunEveryWhere to correctly set the value.

VoltDB/voltdb,VoltDB/voltdb,VoltDB/voltdb,VoltDB/voltdb,VoltDB/voltdb,VoltDB/voltdb,VoltDB/voltdb