HPCC-8876 Not show MoveUp/down menu for queued agentexec job

On EclWatch Activity page, each queued job has a pop up menu
which contains menu items: Move Up/Down/Top/Bottom, set High
Priority, and others. For queued agentexec jobs, MoveUp/Down/Top/
Bottom and set High Priority are not useful because they will be
fired off eclagent quickly in parallel. This fix sets agentQueue
for queued agentexec jobs and uses the agentQueue to identify
those jobs from other queued jobs. For those jobs, Move Up/Down/
Top/Bottom menu items and High Priority menu item will not be
shown inside the pop up menu.

Signed-off-by: Kevin Wang <kevin.wang@lexisnexis.com>