issue #228: Use SIGKILL to kill proc in featuretests

qemu-io process used up cpu time.

it's related to https://bugzilla.redhat.com/show_bug.cgi?id=971790
The qemu_iso_stream_dns invoke that bug and make qemu-io enter an
endless loop.

not sure SIGKILL can fix this completely.

But the behavior of signal SIGTERM is up to the app,
signal SIGKILL is determined.

We can try, if still issue, we need some other ways to fix it.

Signed-off-by: ShaoHe Feng <shaohef@linux.vnet.ibm.com>
Fix text wrap in template and guest

V1-V2 Use the same indent with the orginal one.
There are some text wrap in guest and template add page.
1 "Network I/O" in network page.
2 template local iso "OS" "Version"
This patch work fox fix them.
Signed-off-by: zhoumeina <zhoumein@linux.vnet.ibm.com>
Issue #227: Misunderstood labels and error messages in templates tab.

V1 -> V2: Modified the msgid of the previous messages to match to the
message string and addressed some comments from reviews.

V1: Changed labels and error messages while creating a new template to don't
misunderstand the user at the time to specify an ISO file. Also added a function
to check if the file is an ISO or not.

Signed-off-by: Paulo Vital <pvital@linux.vnet.ibm.com>