Service module outputting extra data.

The service module was printing stuff to stderr, returning two
JSON dicts, not using consistent 'failed' values, had dead code
and unused variables.  Added detection for the case when service
status returns 'xxx is dead and pid file exists' and made the
code a bit easier to read.

library/service

@@ -75,7 +75,6 @@ def _find_binaries():
 
 def _get_service_status(name):
     rc, status_stdout, status_stderr = _run("%s %s status" % (SERVICE, name))
-    status = status_stdout + status_stderr
 
     # set the running state to None because we don't know it yet
     running = None
@@ -99,16 +98,18 @@ def _get_service_status(name):
     # if the job status is still not known check it by status output keywords
     if running == None:
         # first tranform the status output that could irritate keyword matching
-        cleaned_status_stdout = status_stdout.lower().replace(name.lower(),'')
-        if cleaned_status_stdout.find("stop") != -1:
+        cleanout = status_stdout.lower().replace(name.lower(), '')
+        if "stop" in cleanout:
             running = False
-        elif cleaned_status_stdout.find("run") != -1 and cleaned_status_stdout.find("not") != -1:
+        elif "run" in cleanout and "not" in cleanout:
             running = False
-        elif cleaned_status_stdout.find("run") != -1 and cleaned_status_stdout.find("not") == -1:
+        elif "run" in cleanout and "not" not in cleanout:
             running = True
-        elif cleaned_status_stdout.find("start") != -1 and cleaned_status_stdout.find("not") == -1:
+        elif "start" in cleanout and "not" not in cleanout:
             running = True
-        elif 'could not access pid file' in cleaned_status_stdout:
+        elif 'could not access pid file' in cleanout:
+            running = False
+        elif 'is dead and pid file exists' in cleanout:
             running = False
 
     # if the job status is still not known check it by special conditions
@@ -205,8 +206,9 @@ if state or enable:
         print json.dumps({
             "failed" : True,
             "msg"    : "failed determining the current service state => state stays unchanged",
+            "changed": False
         })
-        print >> sys.stderr, out + err
+        sys.exit(1)
     elif state:
         # a state change command has been requested
 
@@ -244,10 +246,9 @@ if state or enable:
     if rc != 0:
 
         print json.dumps({
-            "failed" : 1,
+            "failed" : True,
             "rc"     : rc,
         })
-        print >> sys.stderr, out + err
         sys.exit(1)
 
 
@@ -260,20 +261,8 @@ if state or enable:
     if list_items and list_items in [ 'status' ]:
         result['status'] = stdout
     print json.dumps(result)
-
     
-elif list_items is not None:
-
-    # solo list=status mode, don't change anything, just return
-    # suitable for /usr/bin/ansible usage or API, playbooks
-    # not so much
-
-    print json.dumps({
-        "status" : status
-    })
-
 else:
- 
     print json.dumps(dict(failed=True, msg="expected state or list parameters"))