MRG: Merge branch 'develop' into complexImage_integration

.gitlab/issue_templates/feature_request.md

CONTRIBUTING.md

...Adapters/OSSIMAdapters/include/otbSarSensorModelAdapter.h

Modules/Adapters/OSSIMAdapters/src/otbImageKeywordlist.cxx

...s/Adapters/OSSIMAdapters/src/otbSarSensorModelAdapter.cxx

Modules/Adapters/OSSIMAdapters/test/CMakeLists.txt

...dapters/OSSIMAdapters/test/otbOSSIMAdaptersTestDriver.cxx

...pters/OSSIMAdapters/test/otbSarSensorModelAdapterTest.cxx

Modules/IO/ImageIO/include/otbImageFileReader.txx

...ning/Sampling/include/otbPersistentSamplingFilterBase.txx

...rning/Sampling/test/otbImageSampleExtractorFilterTest.cxx

...irdParty/OssimPlugins/include/ossim/ossimSarSensorModel.h

...ThirdParty/OssimPlugins/src/ossim/ossimSarSensorModel.cpp