feat(engine): op logs for process instance suspend/delete/activate

related to CAM-1728
chore(sql-scripts): add column ACT_HI_OP_LOG.PROC_DEF_KEY

related to CAM-1728
fix(pom): fix manifest import statement generation

- proper imports for spin and connect

related to CAM-2680
test(engine): test op log entry generation of proc def suspend/activate

related to CAM-1728
chore(rest): expose processDefinitionKey in operation log query

related to CAM-1728
feat(distro): add filter table to sql upgrade scripts

related to #CAM-2628
fix(engine): add limitBetweenClob for tables with CLOB columns

- DB2 restrict 'select distinct' statements to not contain CLOB
  columns in the result set

see:
http://www-01.ibm.com/support/knowledgecenter/SSEPEK_10.0.0/com.ibm.db2z10.doc.codes/src/tpc/n134.dita

related to #CAM-2628
fix(engine): use correct limitBetweenStatements map

related to #CAM-2628