small refactor of monitor call for op5Monitor

Change-Id: I8c0ba935384600f24e5e836ebc83f3876ca9dda8
Signed-off-by: Mattias Ryrlén <mattiasr@op5.com>
enable possibility to send POST data

We need this for op5Monitor COMMANDs atleast.

Change-Id: Iafe2b0de315583802ec1ea133ec31e2c90a44d36
Signed-off-by: Mattias Ryrlén <mattiasr@op5.com>