BZ 990490: not able to retrieve specific variable log
(cherry picked from commit 4d2dd6a9368ec0d2aed84f3b489de2be285fd506)
BZ 994509: allowing '_' in process id when starting processes via REST api
(cherry picked from commit 0b50aef95955cf05a8d2118e3a5345e2a17c9eed)