tests: quote generated arguments for ipcrm

In case that awk fails to parse out the right id the next
ipc command will give us a clear error message instead of
telling us to use correct syntax.

Signed-off-by: Ruediger Meier <ruediger.meier@ga-group.nl>
tests: add basic test case for ipcs -q -i n

Signed-off-by: Ruediger Meier <ruediger.meier@ga-group.nl>
tests: add basic test case for ipcs -s -i n

Signed-off-by: Ruediger Meier <ruediger.meier@ga-group.nl>
tests: add basic test case for ipcs -m -i n

Signed-off-by: Ruediger Meier <ruediger.meier@ga-group.nl>