Merge pull request #1367 from ashahba:ashahba/future

PiperOrigin-RevId: 251265225
(cherry picked from commit 99a6482)

Author: tensorflow-copybara

tensorflow_serving/tools/docker/Dockerfile.devel

@@ -51,6 +51,7 @@ RUN curl -fSsL -O https://bootstrap.pypa.io/get-pip.py && \
     rm get-pip.py
 
 RUN pip --no-cache-dir install \
+    future>=0.17.1 \
     grpcio \
     h5py \
     keras_applications \

tensorflow_serving/tools/docker/Dockerfile.devel-gpu

@@ -82,6 +82,7 @@ RUN curl -fSsL -O https://bootstrap.pypa.io/get-pip.py && \
     rm get-pip.py
 
 RUN pip --no-cache-dir install \
+    future>=0.17.1 \
     grpcio \
     h5py \
     keras_applications \

tensorflow_serving/tools/docker/Dockerfile.devel-mkl

@@ -51,6 +51,7 @@ RUN curl -fSsL -O https://bootstrap.pypa.io/get-pip.py && \
     rm get-pip.py
 
 RUN pip --no-cache-dir install \
+    future>=0.17.1 \
     grpcio \
     h5py \
     keras_applications \