ENH: Mention ICLA and CCLA in CONTRIBUTING.md and add check box about the cla...

ENH: Mention ICLA and CCLA in CONTRIBUTING.md and add check box about the cla in the gitlab MR template

.gitlab/merge_request_templates/request_for_changes.md

@@ -22,8 +22,12 @@ Describe the testing strategy for new features.
 
 ### Documentation
 
-List or link documentation modifications that were made (doxygen, example, software guide, application documentation, cookbook).
+List or link documentation modifications that were made (doxygen, example, Software Guide, application documentation, CookBook).
 
 ### Additional notes
 
-List remaining open issues if any, and additional notes. 
+List remaining open issues if any, and additional notes.
+
+### Copyright
+
+[ ] I've signed the ORFEO ToolBox Contributor License Agreement

CONTRIBUTING.md

@@ -117,6 +117,22 @@ Once the feature branch is registered for testing, it should appear in the *Feat
 
 Do not forget to remove the feature branch for testing once it has been merged.
 
+### Contribution license agreement
+
+OTB requires that contributors sign out a [Contributor License
+Agreement](https://en.wikipedia.org/wiki/Contributor_License_Agreement). The
+purpose of this CLA is to ensure that the project has the necessary ownership or
+grants of rights over all contributions to allow them to distribute under the
+chosen license (Apache License Version 2.0)
+
+To accept your contribution, you need to complete, sign and email to *cla [at]
+orfeo-toolbox [dot] org* an [Individual Contributor Licensing
+Agreement](https://www.orfeo-toolbox.org/cla/icla-en.doc) (ICLA) form and a
+[Corporate Contributor Licensing
+Agreement](https://www.orfeo-toolbox.org/cla/ccla-en.doc) (CCLA) form if you are
+contributing on behalf of your company or another entity which retains copyright
+for your contribution.
+
 ## Remote modules
 
 [Remote Modules](https://wiki.orfeo-toolbox.org/index.php/Remote_Modules) are