[Ubuntu] Provide version info for binutils and coreutils packages (#2627)

* include binutils and coreutils to doc section

* fix bin to core

* replace split to Take-OutputPart

images/linux/scripts/tests/Apt.Tests.ps1

@@ -24,6 +24,16 @@ Describe "Apt" {
             $toolName = "searchd"
         }
 
+        if ($toolName -eq "binutils")
+        {
+            $toolName = "strings"
+        }
+
+        if ($toolName -eq "coreutils")
+        {
+            $toolName = "tr"
+        }
+
         (Get-Command -Name $toolName).CommandType | Should -BeExactly "Application"
     }
 }