MINOR: Pin ducktape to version 0.7.10

Ducktape version 0.7.10 pinned paramiko to version 2.3.2 to deal with random SSHExceptions confluent had been seeing since ducktape was updated to a later version of paramiko.

The idea is that we can backport ducktape 0.7.10 change as far back as possible, while 2.7 and trunk can update to 0.8.0 and python3 separately.

Tested:
In progress, but unlikely to affect anything, since the only difference between ducktape 0.7.9 and 0.7.10 is paramiko version downgrade.

Author: Stanislav Vodetskyi <stan@confluent.io>

Reviewers: Manikumar Reddy <manikumar.reddy@gmail.com>

Closes #9490 from stan-confluent/ducktape-710-26

(cherry picked from commit 1cbc4da0c9)
Signed-off-by: Manikumar Reddy <manikumar.reddy@gmail.com>

tests/docker/Dockerfile

@@ -34,7 +34,7 @@ LABEL ducker.creator=$ducker_creator
 # Update Linux and install necessary utilities.
 RUN apt update && apt install -y sudo netcat iptables rsync unzip wget curl jq coreutils openssh-server net-tools vim python-pip python-dev libffi-dev libssl-dev cmake pkg-config libfuse-dev iperf traceroute && apt-get -y clean
 RUN python -m pip install -U pip==9.0.3;
-RUN pip install --upgrade cffi virtualenv pyasn1 boto3 pycrypto pywinrm ipaddress enum34 && pip install --upgrade ducktape==0.7.9
+RUN pip install --upgrade cffi virtualenv pyasn1 boto3 pycrypto pywinrm ipaddress enum34 && pip install --upgrade ducktape==0.7.10
 
 # Set up ssh
 COPY ./ssh-config /root/.ssh/config

tests/setup.py

@@ -51,7 +51,7 @@ setup(name="kafkatest",
       license="apache2.0",
       packages=find_packages(),
       include_package_data=True,
-      install_requires=["ducktape==0.7.9", "requests==2.22.0"],
+      install_requires=["ducktape==0.7.10", "requests==2.22.0"],
       tests_require=["pytest", "mock"],
       cmdclass={'test': PyTest},
       )