virttest.qemu_vm: Check migration_exec_cmd_src before accessing it

Signed-off-by: Qingtang Zhou <zhouqt@gmail.com>
shared.deps: Adding build_install.py script to download git repo, build and install

In order to build git repos in the guest, ship this simple script.
It'll be used to build SPICE components, though it could be used
for other purposes.

Signed-off-by: Swapna Krishnan <skrishna@redhat.com>
Add NetworkManager and enable servie for RHEL.5 guest

Signed-off-by: Xiaoqing Wei <xwei@redhat.com>
Merge pull request #759 from xiaoqing-wei/rhel5.NetworkManager

Add NetworkManager and enable servie for RHEL.5 guest
Merge pull request #758 from zhouqt/migrate

virttest.qemu_vm: Check migration_exec_cmd_src before accessing it
qemu_cpu.cfg: remove "no 486" line

I don't know why 486 was being excluded, as the CPUID instruction really
works, and QEMU has CPUID data being set for 486, too. The tests keep
working after removing the "no 486" line from the config file.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>