New lookup plugin : ini. Can handle ini file and java properties file.

Can also read a list of value in a section using regexp.

test/integration/lookup.ini

@@ -0,0 +1,24 @@
+[global]
+# A comment
+value1=Text associated with value1 and global section
+value2=Same for value2 and global section
+value.dot=Properties with dot
+field.with.space = another space
+
+[section1]
+value1=Another value for section1
+# No value2 in this section
+
+[value_section]
+value1=1
+value2=2
+value3=3
+other1=4
+other2=5
+
+[other_section]
+value1=1
+value2=2
+value3=3
+other1=4
+other2=5