Issue 339 1.0 (#372)

* Stop setting default node name to graylog-sidecar (#346)

Removed the lines to default the node name to graylog-sidecar. 
The current action doesn't match the documentation.
# The node name of the sidecar. If this is empty, the sidecar will use the
# hostname of the host it is running on.

(cherry picked from commit b7c0048)

* Default the windows installer to an empty nodename (#347)

It's a better default to use the system's hostname.

Fixes #339

(cherry picked from commit 5472b0d)

dist/recipe.nsi

@@ -208,9 +208,6 @@ Section "Post"
   ${If} $ServerUrl == ""
     StrCpy $ServerUrl "http://127.0.0.1:9000/api"
   ${EndIf}
-  ${If} $NodeName == ""
-    StrCpy $NodeName "graylog-sidecar"
-  ${EndIf}
   ${If} $UpdateInterval == ""
     StrCpy $UpdateInterval "10"
   ${EndIf}
@@ -295,14 +292,16 @@ Function nsDialogsPage
   ${NSD_CreateText} 50 20 75% 12u "http://127.0.0.1:9000/api"
   Pop $InputServerUrl
 
-  ${NSD_CreateLabel} 0 60 100% 12u "Enter the name of this instance:"
+  ${NSD_CreateLabel} 0 60 100% 12u "The name of this instance:"
   Pop $Label
-  ${NSD_CreateText} 50 80 75% 12u "graylog-sidecar"
+  ${NSD_CreateText} 50 80 75% 12u ""
   Pop $InputNodeName
+  ${NSD_CreateLabel} 50 100 100% 12u "If empty, the hostname will be used."
+  Pop $Label
 
-  ${NSD_CreateLabel} 0 120 100% 12u "Enter the server API token:"
+  ${NSD_CreateLabel} 0 140 100% 12u "Enter the server API token:"
   Pop $Label
-  ${NSD_CreateText} 50 140 75% 12u ""
+  ${NSD_CreateText} 50 160 75% 12u ""
   Pop $InputApiToken
 
   nsDialogs::Show
@@ -317,10 +316,6 @@ Function nsDialogsPageLeave
       MessageBox MB_OK "Please enter a valid address to your Graylog server!"
       Abort
   ${EndIf}
-  ${If} $NodeName == ""
-      MessageBox MB_OK "Please enter the instance name!"
-      Abort
-  ${EndIf}
   ${If} $ApiToken == ""
       MessageBox MB_OK "Please enter an API token!"
       Abort