CI: pin 2.7 build to numpy 1.13 for the moment

xref pandas-dev#19138

Author: jreback

ci/requirements-2.7.build

@@ -2,5 +2,5 @@ python=2.7*
 python-dateutil=2.5.0
 pytz=2013b
 nomkl
-numpy
+numpy=1.13*
 cython=0.24

conda.recipe/meta.yaml

@@ -14,14 +14,14 @@ requirements:
   build:
     - python
     - cython
-    - {{ pin_compatible('numpy') }}
+    - {{ pin_compatible('numpy', upper_bound='1.14') }}
     - setuptools >=3.3
     - python-dateutil >=2.5.0
     - pytz
 
   run:
     - python
-    - {{ pin_compatible('numpy') }}
+    - {{ pin_compatible('numpy', upper_bound='1.14') }}
     - python-dateutil >=2.5.0
     - pytz