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

test/integration/lookup.properties

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+# A comment
+value1=Text associated with value1
+value2=Same for value2
+value.dot=Properties with dot
+field.with.space = another space

test/integration/test_lookup_properties.yml

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+---
+- name: "Lookup test"
+  hosts: "localhost"
+#  connection: local
+  tasks:
+    - name: "read properties value"
+      set_fact:
+        test1:            "{{lookup('ini', 'value1            type=properties  file=lookup.properties')}}"
+        test2:            "{{lookup('ini', 'value2            type=properties  file=lookup.properties')}}"
+        test_dot:         "{{lookup('ini', 'value.dot         type=properties  file=lookup.properties')}}"
+        field_with_space: "{{lookup('ini', 'field.with.space  type=properties  file=lookup.properties')}}"
+    - debug: var={{item}}
+      with_items: [ 'test1', 'test2', 'test_dot', 'field_with_space' ]
+    - name: "read ini value"
+      set_fact:
+        value1_global:    "{{lookup('ini', 'value1            section=global   file=lookup.ini')}}"
+        value2_global:    "{{lookup('ini', 'value2            section=global   file=lookup.ini')}}"
+        value1_section1:  "{{lookup('ini', 'value1            section=section1 file=lookup.ini')}}"
+    - debug: var={{item}}
+      with_items: [ 'value1_global', 'value2_global', 'value1_section1' ]
+    - name: "read ini value with section and regexp"
+      set_fact:
+        value_section:    "{{lookup('ini', 'value[1-2]        section=value_section file=lookup.ini re=true')}}"
+        other_section:    "{{lookup('ini', 'other[1-2]        section=other_section file=lookup.ini re=true')}}"
+    - debug: var={{item}}
+      with_items: [ 'value_section', 'other_section' ]
+    - name: "Reading unknown value"
+      set_fact:
+        value2_section2:  "{{lookup('ini', 'value2           section=section1 file=lookup.ini')}}"