VolumeGroup#scan doesn't strip leading whitespace when parsing the name

[jrafanie]

# vgcreate vg_data /dev/sdb1
  Volume group "vg_data" successfully created

# bundle console
irb(main):001:0> require 'linux_admin'
=> true
irb(main):002:0> vg = LinuxAdmin::VolumeGroup.scan.first
=> #<LinuxAdmin::VolumeGroup:0x00000003178bf0 @name="  vg_data">
irb(main):003:0> vg.name
=> "  vg_data"

This causes LogicalVolume.create to fail:

irb(main):03:0> begin;  LinuxAdmin::LogicalVolume.create("lv_pg", vg, (LinuxAdmin::Disk.local.first.size / 1.megabytes).to_i - 1.megabyte); rescue => err; puts err.result.inspect; end
#<CommandResult:0x00000004f123c8 @output="", @error="  Volume group name   vg_data has invalid characters\n  Run `lvcreate --help' for more information.\n", @exit_status=3>

[jrafanie]

[root@jr-rhel6-4 vmdb]# lvdisplay -c
  /dev/vg_jrrhel64/lv_root:vg_jrrhel64:3:1:-1:1:11681792:1426:-1:0:-1:253:0
  /dev/vg_jrrhel64/lv_swap:vg_jrrhel64:3:1:-1:1:8257536:1008:-1:0:-1:253:1
[root@jr-rhel6-4 vmdb]# pvdisplay -c
  /dev/sdb1:vg_data:2095104:-1:8:8:-1:4096:255:255:0:kIya4c-1RqO-RPNh-71OL-gc80-RqSq-G4j1cu
  /dev/sda2:vg_jrrhel64:19945472:-1:8:8:-1:4096:2434:0:2434:amjdVr-y8RY-KEJ7-y7IB-mJsp-6f0j-bbdP9p