Revert "Rate limit testenv creation"

This reverts commit 0030f6c664.

Test env requests are queuing up and nothing is getting a env in a timely
mannor. As I think we are still trying to create envs for jobs that have
timed out. Revert this to our behaviour befor last week while we investigate
the problem.

Change-Id: I79353941d838628e492b46acce6dde8ef2ec3aff

scripts/te-broker/te-broker.pp

@@ -12,10 +12,6 @@ vcsrepo {"/opt/stack/tripleo-ci":
     ensure => latest,
 }
 
-package {"python-posix_ipc":
-    ensure => "present",
-}
-
 cron {"refresh-server":
     command => "timeout 20m puppet apply /opt/stack/tripleo-ci/scripts/te-broker/te-broker.pp",
     minute  => "*/30"

scripts/te-broker/testenv-worker

@@ -31,7 +31,6 @@ import time
 import uuid
 
 import gear
-import posix_ipc
 
 # 100Mb log files
 maxBytes=1024*1024*100
@@ -126,15 +125,9 @@ class TEWorkerThread(threading.Thread):
         try:
             with tempfile.NamedTemporaryFile('r') as fp:
                 os.environ["TE_DATAFILE"] = fp.name
-                # Limit the number of concurrent environment creations to 5.
-                # This will hopefully reduce the number of testenv creations
-                # that fail or timeout due to an overloaded controller.
-                with posix_ipc.Semaphore('testenv-worker',
-                                         flags=posix_ipc.O_CREAT,
-                                         initial_value=5):
-                    logger.info(
-                        subprocess.check_output([self.scriptfiles[0], self.num, arguments.get("envsize","2"), arguments.get("ucinstance","")], stderr=subprocess.STDOUT))
-                    clientdata = fp.read()
+                logger.info(
+                    subprocess.check_output([self.scriptfiles[0], self.num, arguments.get("envsize","2"), arguments.get("ucinstance","")], stderr=subprocess.STDOUT))
+                clientdata = fp.read()
         except subprocess.CalledProcessError as e:
             logger.error(e.output)
             clientdata = "Couldn't retrieve env"