Solaris_update_version: Create kernel[:update] for solaris 2

Extract the Solaris update information from /etc/release.

lib/ohai/plugins/kernel.rb

@@ -151,6 +151,10 @@ def os_lookup(sys_type)
     so = shell_out("uname -s")
     kernel[:os] = so.stdout.split($/)[0]
 
+    so = File.open('/etc/release') { |file| file.gets }
+    md = /(?<update>\d.*\d)/.match(so)
+    kernel[:update] = md[:update] if md
+
     modules = Mash.new
 
     so = shell_out("modinfo")

spec/unit/plugins/solaris2/kernel_spec.rb

@@ -139,8 +139,31 @@
     allow(@plugin).to receive(:init_kernel).and_return({})
     allow(@plugin).to receive(:shell_out).with("uname -s").and_return(mock_shell_out(0, "SunOS\n", ""))
     allow(@plugin).to receive(:shell_out).with("modinfo").and_return(mock_shell_out(0, MODINFO, ""))
+    @release = StringIO.new("                   Oracle Solaris 10 1/13 s10s_u11wos_24a SPARC\n Assembled 17 January 2013")
+    allow(File).to receive(:open).with("/etc/release").and_yield(@release)
   end
 
+  it "should give the Solaris update version informtion" do
+    @release = StringIO.new("                      Solaris 10 10/08 s10s_u6wos_07b SPARC\n Use is subject to license terms.\n Assembled 27 October 2008")
+    allow(File).to receive(:open).with("/etc/release").and_yield(@release)
+    @plugin.run
+    expect(@plugin[:kernel][:update]).to eq('10 10/08 s10s_u6wos_07')
+  end 
+
+  it "should give the Oracle Solaris update version informtion" do
+    @release = StringIO.new("                   Oracle Solaris 10 1/13 s10s_u11wos_24a SPARC\n Assembled 17 January 2013")
+    allow(File).to receive(:open).with("/etc/release").and_yield(@release)
+    @plugin.run
+    expect(@plugin[:kernel][:update]).to eq('10 1/13 s10s_u11wos_24')
+  end 
+
+  it "should give the Solaris 11 update version informtion" do
+    @release = StringIO.new("                            Oracle Solaris 11.3 SPARC\n Assembled 25 July 2016")
+    allow(File).to receive(:open).with("/etc/release").and_yield(@release)
+    @plugin.run
+    expect(@plugin[:kernel][:update]).to eq('11.3')
+  end 
+
   it_should_check_from_deep_mash("solaris2::kernel", "kernel", "os", "uname -s", [0, "SunOS\n", ""])
 
   it "gives excruciating detail about kernel modules" do