Increase wait time for better average reading

Power readings are updated every 30 seconds and when booting host,
it could take longer than a minute to stabilize the power usage.

Change-Id: I0fffad5236f67e13626635af5f85dea44cc26bde
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/tests/ipmi/test_general_ipmi.robot b/tests/ipmi/test_general_ipmi.robot
index 31d8bcf..4cd05c6 100755
--- a/tests/ipmi/test_general_ipmi.robot
+++ b/tests/ipmi/test_general_ipmi.robot
@@ -389,7 +389,7 @@
 
     REST Power Off  stack_mode=skip  quiet=1
 
-    Wait Until Keyword Succeeds  1 min  20 sec  Verify Power Reading
+    Wait Until Keyword Succeeds  1 min  30 sec  Verify Power Reading
 
 
 Test Power Reading Via IPMI With Host Booted
@@ -402,7 +402,7 @@
     # For a good power reading take a 3 samples for 15 seconds interval and
     # average it out.
 
-    Wait Until Keyword Succeeds  1 min  20 sec  Verify Power Reading
+    Wait Until Keyword Succeeds  2 min  30 sec  Verify Power Reading
 
 
 Test Power Reading Via IPMI Raw Command
@@ -417,7 +417,7 @@
 
     REST Power On  stack_mode=skip  quiet=1
 
-    Wait Until Keyword Succeeds  1 min  20 sec  Verify Power Reading Via Raw Command
+    Wait Until Keyword Succeeds  2 min  30 sec  Verify Power Reading Via Raw Command
 
 
 Test Baseboard Temperature Via IPMI