test: use sed and grep instead of perl

This gets rid of the all-but-one remaining uses of perl. I tested the new code
on my machine, so I'm fairly confident that it works as expected.

install_iscsi() has one majestic perl invocation, but we can't get rid of it
easily: it extends the code of tgt-admin to print some list of files. Obviously
this only works because tgt-admin is written in perl, and perl will be installed
if tgt-admin is installed. install_iscsi() is used in TEST-64-UDEV-STORAGE
conditionally if tgtadm is installed, so this can stay as is.

0 files changed, 0 insertions, 0 deletions