Test seem to assume that zdtm lib directory is on PATH, but if it's not
- calling for parseargs.sh would fail (if cwd is static). Therefore,
this patch changes this to ../lib/parseargs.sh which should be fine both
for zdtm and vzt-cpt.

travis-ci: success for test: fix shell script tests (conntracks & route_rules)
Signed-off-by: Vitaly Ostrosablin <vostrosablin@virtuozzo.com>
Reviewed-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>