Finish to use constants to define partition states

slapos/grid/slapgrid.py

@@ -70,6 +70,8 @@ MANDATORY_PARAMETER_LIST = [
 ]
 
 COMPUTER_PARTITION_DESTROYED_STATE = 'destroyed'
+COMPUTER_PARTITION_STARTED_STATE = 'started'
+COMPUTER_PARTITION_STOPPED_STATE = 'stopped'
 
 # Global variables about return state of slapgrid
 SLAPGRID_SUCCESS = 0
@@ -773,13 +775,13 @@ class Slapgrid(object):
       buildout=self.buildout)
 
     computer_partition_state = computer_partition.getState()
-    if computer_partition_state == "started":
+    if computer_partition_state == COMPUTER_PARTITION_STARTED_STATE:
       local_partition.install()
       computer_partition.available()
       local_partition.start()
       self._checkPromises(computer_partition)
       computer_partition.started()
-    elif computer_partition_state == "stopped":
+    elif computer_partition_state == COMPUTER_PARTITION_STOPPED_STATE:
       try:
         local_partition.install()
         computer_partition.available()