Description of problem:
I suspect this commit https://bugzilla.redhat.com/show_bug.cgi?id=757697#c3 introduced a slight regression for the case when virt-what is not installed.

We have an automated test to assert that subscription-manager facts --list works properly when virt-what is not installed, but it caught the failure demonstrated below...


Version-Release number of selected component (if applicable):
[root@jsefler-onprem-5server ~]# rpm -q subscription-manager
subscription-manager-0.98.8-1.git.8.cfaa9c8.el5_7


How reproducible:


Steps to Reproduce:
[root@jsefler-onprem-5server ~]# which virt-what
/usr/sbin/virt-what
[root@jsefler-onprem-5server ~]# mv /usr/sbin/virt-what /usr/sbin/virt-what.bak

^^^ SIMULATION OF virt-what NOT BEING INSTALLED

[root@jsefler-onprem-5server ~]# subscription-manager facts --list
'virt.is_guest'
[root@jsefler-onprem-5server ~]# echo $?
255

^^^ DID NOT EXPECT facts --list TO FAIL WITH AN EXITCODE OF 255 AND NOT SHOW ANY FACTS IN STDOUT.  THE 'virt.is_guest' MESSAGE WAS WRITTEN TO STDERR.


[root@jsefler-onprem-5server ~]# mv /usr/sbin/virt-what.bak /usr/sbin/virt-what
[root@jsefler-onprem-5server ~]# subscription-manager facts --list
cpu.core(s)_per_socket: 1
cpu.cpu(s): 2
cpu.cpu_socket(s): 2
distribution.id: Tikanga
distribution.name: Red Hat Enterprise Linux Server
distribution.version: 5.8
dmi.bios.address: 0xe8000
dmi.bios.bios_revision: 1.0
dmi.bios.relase_date: 01/01/2007
dmi.bios.rom_size: 64 KB
dmi.bios.runtime_size: 96 KB
dmi.bios.vendor: QEMU
dmi.bios.version: QEMU
dmi.chassis.asset_tag: Not Specified
dmi.chassis.boot-up_state: Safe
dmi.chassis.lock: Not Present
dmi.chassis.manufacturer: Not Specified
dmi.chassis.power_supply_state: Safe
dmi.chassis.security_status: Unknown
dmi.chassis.serial_number: Not Specified
dmi.chassis.thermal_state: Safe
dmi.chassis.type: Other
dmi.chassis.version: Not Specified
dmi.memory.array_handle: 0x1000
dmi.memory.bank_locator: Not Specified
dmi.memory.data_width: 64 bit
dmi.memory.error_correction_type: Other
dmi.memory.error_information_handle: Not Provided
dmi.memory.form_factor: DIMM
dmi.memory.location: Other
dmi.memory.locator: DIMM 0
dmi.memory.maximum_capacity: 1 GB
dmi.memory.size: 1024 MB
dmi.memory.speed:   (ns)
dmi.memory.total_width: 64 bit
dmi.memory.type: RAM
dmi.memory.use: System Memory
dmi.processor.family: Other
dmi.processor.socket_designation: CPU 1
dmi.processor.status: Populated:Enabled
dmi.processor.type: Central Processor
dmi.processor.upgrade: Other
dmi.processor.version: Not Specified
dmi.processor.voltage: Unknown
dmi.system.family: Not Specified
dmi.system.manufacturer: Not Specified
dmi.system.product_name: Not Specified
dmi.system.serial_number: Not Specified
dmi.system.sku_number: Not Specified
dmi.system.status: No errors detected
dmi.system.uuid: 525e7383-f818-2531-bb17-d3669068973d
dmi.system.version: Not Specified
dmi.system.wake-up_type: Power Switch
memory.memtotal: 1025552
memory.swaptotal: 2064376
net.interface.eth0.broadcast: 10.16.120.255
net.interface.eth0.hwaddr: 52:54:00:1c:bd:ed
net.interface.eth0.ipaddr: 10.16.120.152
net.interface.eth0.netmask: 255.255.255.0
net.interface.lo.broadcast: 0.0.0.0
net.interface.lo.hwaddr: 00:00:00:00:00:00
net.interface.lo.ipaddr: 127.0.0.1
net.interface.lo.netmask: 255.0.0.0
net.interface.sit0.broadcast: Unknown
net.interface.sit0.hwaddr: 00:00:00:00:00:00
net.interface.sit0.ipaddr: Unknown
net.interface.sit0.netmask: Unknown
network.hostname: jsefler-onprem-5server
network.ipaddr: 127.0.0.1
system.entitlements_valid: invalid
uname.machine: x86_64
uname.nodename: jsefler-onprem-5server
uname.release: 2.6.18-294.el5
uname.sysname: Linux
uname.version: #1 SMP Tue Oct 25 16:30:40 EDT 2011
virt.host_type: kvm
virt.is_guest: True
virt.uuid: 525e7383-f818-2531-bb17-d3669068973d
[root@jsefler-onprem-5server ~]# echo $?
0


^^^^ WHEN virt-what IS NOT INSTALLED, I EXPECT TO SEE A FULL FACTS REPORT LISTED SIMILAR TO THAT.

PREVIOUSLY, THE VALUE FOR virt.is_guest USED TO REPORT "Unknown" WHEN virt-what IS NOT INSTALLED.