[OE-core] [PATCH] python-testtools: rdepend on doctest module

[Chen Qi]

`import testtools' will give people error for lacking of
doctest module. Add it to RDEPENDS to solve the issue.

Signed-off-by: Chen Qi <Qi.Chen at windriver.com>
---
 meta/recipes-devtools/python/python-testtools.inc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/meta/recipes-devtools/python/python-testtools.inc b/meta/recipes-devtools/python/python-testtools.inc
index 1011c98a32..d0b2e46d7b 100644
--- a/meta/recipes-devtools/python/python-testtools.inc
+++ b/meta/recipes-devtools/python/python-testtools.inc
@@ -19,6 +19,7 @@ DEPENDS += " \
     "
 
 RDEPENDS_${PN} += "\
+    ${PYTHON_PN}-doctest \
     ${PYTHON_PN}-extras \
     ${PYTHON_PN}-pbr \
     ${PYTHON_PN}-six \
-- 
2.17.1