hm2-idrom test:  fix "too many arguments" error
hm2-idrom test:  fix "too many arguments" error

Introduced by Y.T. in c6b87eec.  :P

From build log:

+ test -f realtime.log.0 realtime.log.1 realtime.log.10 realtime.log.11 [...]
test.sh: line 29: test: too many arguments

(Also, fix difficult-to-read test)

araisrobo/machinekit,mhaberler/machinekit,strahlex/machinekit,EqAfrica/machinekit,unseenlaser/machinekit,mhaberler/machinekit,kinsamanka/machinekit,araisrobo/machinekit,ArcEye/MK-Qt5,mhaberler/machinekit,ArcEye/machinekit-testing,strahlex/machinekit,mhaberler/machinekit,araisrobo/machinekit,RunningLight/machinekit,unseenlaser/machinekit,kinsamanka/machinekit,ArcEye/machinekit-testing,ArcEye/MK-Qt5,ArcEye/MK-Qt5,araisrobo/machinekit,Cid427/machinekit,kinsamanka/machinekit,unseenlaser/machinekit,kinsamanka/machinekit,EqAfrica/machinekit,RunningLight/machinekit,Cid427/machinekit,ArcEye/MK-Qt5,araisrobo/machinekit,unseenlaser/machinekit,Cid427/machinekit,araisrobo/machinekit,mhaberler/machinekit,mhaberler/machinekit,strahlex/machinekit,EqAfrica/machinekit,Cid427/machinekit,ArcEye/MK-Qt5,ArcEye/machinekit-testing,strahlex/machinekit,kinsamanka/machinekit,kinsamanka/machinekit,unseenlaser/machinekit,bobvanderlinden/machinekit,ArcEye/MK-Qt5,unseenlaser/machinekit,mhaberler/machinekit,Cid427/machinekit,RunningLight/machinekit,ArcEye/machinekit-testing,Cid427/machinekit,araisrobo/machinekit,RunningLight/machinekit,kinsamanka/machinekit,EqAfrica/machinekit,EqAfrica/machinekit,bobvanderlinden/machinekit,bobvanderlinden/machinekit,ArcEye/machinekit-testing,strahlex/machinekit,bobvanderlinden/machinekit,EqAfrica/machinekit,RunningLight/machinekit,RunningLight/machinekit,EqAfrica/machinekit,ArcEye/machinekit-testing,unseenlaser/machinekit,Cid427/machinekit,araisrobo/machinekit,araisrobo/machinekit,ArcEye/MK-Qt5,unseenlaser/machinekit,Cid427/machinekit,bobvanderlinden/machinekit,EqAfrica/machinekit,RunningLight/machinekit,ArcEye/MK-Qt5,kinsamanka/machinekit,strahlex/machinekit,bobvanderlinden/machinekit,mhaberler/machinekit,strahlex/machinekit,RunningLight/machinekit,ArcEye/machinekit-testing,ArcEye/machinekit-testing,bobvanderlinden/machinekit,bobvanderlinden/machinekit