Task LSMR-8: attempt to switch to Python 3

SAS/LSMR/CMakeLists.txt

@@ -2,7 +2,6 @@
 
 lofar_package(LSMR 0.1)
 
-# set(Python_ADDITIONAL_VERSIONS 3.4) # FIXME: Find proper solution to manage Python environments with cmake!
 include(PythonInstall)
 
 add_subdirectory(src)

SAS/LSMR/src/CMakeLists.txt

 lofar_find_package(PythonInterp 3.4 REQUIRED)
 include(PythonInstall)
 include(FindPythonModule)
+set(Python_ADDITIONAL_VERSIONS 3.4) # FIXME: Find proper solution to manage Python environments with cmake!
 find_python_module(django REQUIRED)
 find_python_module(rest_framework REQUIRED)     # pip install djangorestframework
 find_python_module(ldap REQUIRED)
-# find_python_module(markdown REQUIRED)      # FIXME: not detected
+find_python_module(markdown REQUIRED)
 # find_python_module(django-filter REQUIRED) # FIXME: not detected
 
 set(_py_files

SAS/LSMR/test/CMakeLists.txt

 include(LofarCTest)
 include(FindPythonModule)
 
+set(Python_ADDITIONAL_VERSIONS 3.4) # FIXME: Find proper solution to manage Python environments with cmake!
+
 find_python_module(mock REQUIRED)
-find_python_module(requests REQUIRED)
+# find_python_module(requests REQUIRED) # FIXME: Not detected
 
 lofar_add_test(t_lsmrapp_models)
 lofar_add_test(t_functional)