Support MultiStrOpt options in configuration file.

Fixed bug #1136964.

1. Added 3 ini functions to support MultiStrOpt:
  Function "iniset_multiline config-file section option value1 value2
value3 ..." sets a MultiStrOpt option in an ini file.

  Function "iniget_multiline config-file section option" gets the
MultiStrOpt option values.

  Function "iniadd config-file section option value1 value2 value3..."
appends an option without relacing the old values, which would result
the option to be MultiStrOpt.

2. Modified the nova configuation to correctly enable notification for
ceilometer.

Change-Id: I1c27db1a6e58b35bc4428e761f40627988f69e37

tests/functions.sh

@@ -60,6 +60,10 @@ spaces  =  yes
 
 [ddd]
 empty =
+
+[eee]
+multi = foo1
+multi = foo2
 EOF
 
 # Test with spaces
@@ -193,6 +197,34 @@ else
     echo "inicomment failed: $VAL"
 fi
 
+# Test multiple line iniset/iniget
+iniset_multiline test.ini eee multi bar1 bar2
+
+VAL=$(iniget_multiline test.ini eee multi)
+if [[ "$VAL" == "bar1 bar2" ]]; then
+    echo "OK: iniset_multiline"
+else
+    echo "iniset_multiline failed: $VAL"
+fi
+
+# Test iniadd with exiting values
+iniadd test.ini eee multi bar3
+VAL=$(iniget_multiline test.ini eee multi)
+if [[ "$VAL" == "bar1 bar2 bar3" ]]; then
+    echo "OK: iniadd"
+else
+    echo "iniadd failed: $VAL"
+fi
+
+# Test iniadd with non-exiting values
+iniadd test.ini eee non-multi foobar1 foobar2
+VAL=$(iniget_multiline test.ini eee non-multi)
+if [[ "$VAL" == "foobar1 foobar2" ]]; then
+    echo "OK: iniadd with non-exiting value"
+else
+    echo "iniadd with non-exsting failed: $VAL"
+fi
+
 rm test.ini
 
 # Enabling/disabling services