FIX: arcconf physical list state

```bash
  # lspci | grep -i raid
  82:00.0 RAID bus controller: Adaptec AAC-RAID (rev 09)

  # /var/lib/einarc/tools/adaptec_arcconf/cli getconfig 1 pd
  Controllers found: 1
  ----------------------------------------------------------------------
  Physical Device information
  ----------------------------------------------------------------------
        Device #0
          Device is a Hard drive
          State                              : Online
          Supported                          : Yes
          Transfer Speed                     : SATA 3.0 Gb/s
          Reported Channel,Device(T:L)       : 0,8(8:0)
          Reported Location                  : Enclosure 0, Slot 0
          Reported ESD(T:L)                  : 2,0(0:0)
          Vendor                             : WDC
          Model                              : WD1003FBYX-0
          Firmware                           : 01.01V02
          Serial number                      : WD-WCAW31019188
          Reserved Size                      : 538264 KB
          Used Size                          : 953343 MB
          Unused Size                        : 1 MB
          Total Size                         : 953869 MB
          Write Cache                        : Enabled (write-back)
          FRU                                : None
          S.M.A.R.T.                         : No
          S.M.A.R.T. warnings                : 0
          Power State                        : Full rpm
          Supported Power States             : Full rpm,Powered off,Reduced rpm
          SSD                                : No
          MaxCache Capable                   : No
          MaxCache Assigned                  : No
          NCQ status                         : Enabled

  # /var/lib/einarc/tools/adaptec_arcconf/cli getconfig 1 ld
  ...
    Group 0, Segment 0                       : Present (Controller:1,Enclosure:0,Slot:0)      WD-WCAW31019188
```
  In example above you can see that in order to co-relate physical and logical drive
  we need to rely on 'Reported Location' rather than 'Reported Channel,Device' since
  Enclosure/Slot pair (and drive Serial) seem to be only reliable keys to establish relation
  between two, hence change...

```bash
  -                               when /Reported Channel,Device\(T:L\)\s*:\s*(\d+),(\d+).*/
  +                               when /Reported Location\s*:\s*Enclosure\s*(\d+),\s*Slot\s*(\d+)/

  additionally _logical_list.each_with_index was secured to prevent accessing non-existent keys
  which would result with failure.
  In same block @physical[pd][:state] assignment was adjusted for case when it's not array
  so 'string' state is not overwritten with index of logical drive which physical drive belongs to

  @@ -339,12 +341,13 @@ module RAID
                          _logical_list.each_with_index { |l, i|
                                  next unless l
                                  l[:physical].each { |pd|
  +                                       next if not @physical.has_key?(pd)
                                          next if %w{ failed }.include?(@physical[pd][:state])
                                          next if @physical[pd][:state] == "hotspare"
                                          if @physical[pd][:state].is_a?(Array)
                                                  @physical[pd][:state] << i
                                          else
  -                                               @physical[pd][:state] = [ i ]
  +                                               @physical[pd][:state] += ', ' + i.to_s
                                          end
                                  }
                          }
```
  Now 'einarc physical list' looks like
```bash
  # einarc physical list
  ID      Model                    Revision       Serial                     Size     State
  0:0     WDC WD1003FBYX-0         01.01V02       WD-WCAW31019188       953869.00 MB  online, 0, 1
  0:1     WDC WD1003FBYX-0         01.01V02       WD-WCAW32922666       953869.00 MB  online, 0, 1
  0:2     WDC WD1003FBYX-0         01.01V02       WD-WCAW31024279       953869.00 MB  online, 0, 1
  0:3     WDC WD1003FBYX-0         01.01V02       WD-WCAW32929714       953869.00 MB  online, 0, 1
  0:4     WDC WD1003FBYX-0         01.01V01       WD-WCAW32893048       953869.00 MB  online, 0, 1
  0:5     WDC WD1003FBYX-0         01.01V01       WD-WCAW32439976       953869.00 MB  online, 0, 1
  0:6     WDC WD1003FBYX-0         01.01V01       WD-WCAW32856264       953869.00 MB  online, 0, 1
  0:7     WDC WD1003FBYX-0         01.01V01       WD-WCAW32868255       953869.00 MB  online, 0, 1
```