Convert to new override syntax

This is the result of automated script (0.9.1) conversion:

oe-core/scripts/contrib/convert-overrides.py .

converting the metadata to use ":" as the override character instead of "_".

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>

meta-python/recipes-devtools/python/python3-requests-toolbelt_0.9.1.bb

@@ -13,11 +13,11 @@ SRC_URI[sha256sum] = "968089d4584ad4ad7c171454f0a5c6dac23971e9472521ea3b6d49d610
 
 inherit pypi setuptools3 ptest
 
-RDEPENDS_${PN} += " \
+RDEPENDS:${PN} += " \
     ${PYTHON_PN}-requests (>=2.0.1) \
 "
 
-RDEPENDS_${PN}-ptest += " \
+RDEPENDS:${PN}-ptest += " \
 	${PYTHON_PN}-pytest \
 	${PYTHON_PN}-betamax \
 	${PYTHON_PN}-mock \