Updated ChromeDriver to latest (2017-02-06; v2.27)

Changelog to ChromeDriver:
----------ChromeDriver v2.27 (2016-12-23)----------
Supports Chrome v54-56
Resolved issue 1637: Getting window handles fails in the presence of shared workers on Chrome 55+ [['OS-All', 'Pri-1']]

----------ChromeDriver v2.26 (2016-12-09)----------
Supports Chrome v53-55
Resolved issue 1607: Chrome 57+ with perf logs enabled fails with "unexpected command response" [['OS-All', 'Pri-1']]
Resolved issue 1502: sendKeys(): SPACE key does not work on Chrome 53 [['OS-All', 'Pri-1']]
Resolved issue 984: Extend ChromeDriver capabilities to cover network throttling feature from Chrome DevTools [['OS-All', 'Pri-2']]
Resolved issue 877: UnhandledAlertException not being propagated upwards [['OS-All', 'Pri-2']]
Resolved issue 1578: Flash plugin blocked after updating Chrome browser [['OS-All', 'Pri-2']]
Resolved issue 1617: Fullscreen command is not recognised [['OS-All', 'Pri-3']]
Resolved issue 839: clear does not work on input type number with string value [['Pri-3']]
Resolved issue 1500: "Could not handle JavaScript dialog" error occurs randomly when accepting confirmation dialogs. [[]]
Resolved issue 1541: find element with empty tag is raising wrong exception in findElement [[]]
Resolved issue 1540: empty tagname value should raise an error when doing findElements [[]]

NodeChrome/Dockerfile

@@ -29,7 +29,7 @@ RUN wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | apt-key
 #==================
 # Chrome webdriver
 #==================
-ARG CHROME_DRIVER_VERSION=2.25
+ARG CHROME_DRIVER_VERSION=2.27
 RUN wget --no-verbose -O /tmp/chromedriver_linux64.zip https://chromedriver.storage.googleapis.com/$CHROME_DRIVER_VERSION/chromedriver_linux64.zip \
   && rm -rf /opt/selenium/chromedriver \
   && unzip /tmp/chromedriver_linux64.zip -d /opt/selenium \

NodeChrome/Dockerfile.txt

@@ -24,7 +24,7 @@ RUN wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | apt-key
 #==================
 # Chrome webdriver
 #==================
-ARG CHROME_DRIVER_VERSION=2.25
+ARG CHROME_DRIVER_VERSION=2.27
 RUN wget --no-verbose -O /tmp/chromedriver_linux64.zip https://chromedriver.storage.googleapis.com/$CHROME_DRIVER_VERSION/chromedriver_linux64.zip \
   && rm -rf /opt/selenium/chromedriver \
   && unzip /tmp/chromedriver_linux64.zip -d /opt/selenium \

NodeFirefox/Dockerfile

@@ -10,7 +10,7 @@ USER root
 #=========
 # Firefox
 #=========
-ARG FIREFOX_VERSION=50.0
+ARG FIREFOX_VERSION=51.0.1
 RUN apt-get update -qqy \
   && apt-get -qqy --no-install-recommends install firefox \
   && rm -rf /var/lib/apt/lists/* /var/cache/apt/* \
@@ -25,7 +25,7 @@ RUN apt-get update -qqy \
 #============
 # GeckoDriver
 #============
-ARG GECKODRIVER_VERSION=0.11.1
+ARG GECKODRIVER_VERSION=0.13.0
 RUN wget --no-verbose -O /tmp/geckodriver.tar.gz https://github.com/mozilla/geckodriver/releases/download/v$GECKODRIVER_VERSION/geckodriver-v$GECKODRIVER_VERSION-linux64.tar.gz \
   && rm -rf /opt/geckodriver \
   && tar -C /opt -zxf /tmp/geckodriver.tar.gz \