skip tests that require signals on windows (still need to make these non-critical)

Author: pekkaklarck

atest/tests/stopping.robot

@@ -8,12 +8,15 @@ Stop Remote Server
     Stop Remote Server
 
 SIGINT
+    Skip On Windows
     Send Signal To Process    SIGINT
 
 SIGHUP
+    Skip On Windows
     Send Signal To Process    SIGHUP
 
 SIGTERM
+    Skip On Windows
     Send Signal To Process    SIGTERM
 
 *** Keywords ***
@@ -25,7 +28,11 @@ Server Should Be Started
     Run Keyword    ${TEST NAME}.Passing
 
 Server Should Be Stopped
+    Return From Keyword If    "skip" in @{TEST TAGS}
     Server Should Be Stopped And Correct Messages Logged
     Run Keyword And Expect Error    Connection to remote server broken: *
     ...    Server Should Be Started
     [Teardown]    Run Keyword And Ignore Error    ${TEST NAME}.Stop Remote Server
+
+Skip On Windows
+    Run Keyword If    "${:}" == ";"    Fail    Skipped on Windows    skip