fix requirements.txt, improve test end time representation
diff --git a/requirements.txt b/requirements.txt
index 6c0f07e..e619460 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,17 +1,19 @@
-oktest
-priest
+decorator
+futures
GChartWrapper==0.8
-decorator==3.4.0
-futures==2.2.0
iso8601==0.1.10
-netaddr==0.7.13
+netaddr
+oktest
paramiko==1.15.2
-petname==1.7
+petname
+prest
prettytable==0.7.2
pyOpenSSL==0.14
python-cinderclient
python-glanceclient
python-keystoneclient
python-novaclient
-requests==2.2.1
-simplejson==3.6.5
+PyYAML
+requests
+simplejson
+texttable