[industrial_extrinsic_cal] Add missing Eigen dependency.

[130s]

No description provided.

[130s]

Closing since it confirmed Travis passes.
Only pre-release test failed as expected at the testcases.

[ 69%] Built target tf2_msgs_generate_messages_cpp
[ 69%] Built target tf_generate_messages_py
[ 69%] Built target tf2_msgs_generate_messages_py
[ 69%] Built target tf2_msgs_generate_messages_lisp
[ 94%] Built target industrial_extrinsic_cal
[ 97%] Built target gtest
[ 97%] Built target gtest_main
[100%] Built target utest_inds_cal
[100%] Built target tests
Scanning dependencies of target _run_tests_industrial_extrinsic_cal_gtest_utest_inds_cal
-- run_tests.py: execute commands
  /tmp/catkin_workspace/devel_isolated/industrial_extrinsic_cal/lib/industrial_extrinsic_cal/utest_inds_cal --gtest_output=xml:/tmp/catkin_workspace/test_results/industrial_extrinsic_cal/gtest-utest_inds_cal.xml
libdc1394 error: Failed to initialize libdc1394
�[31m[ERROR] [1502992964.635863262]: [registerPublisher] Failed to contact master at [localhost:11311].  Retrying...�[0m


No output has been received in the last 10m0s, this potentially indicates a stalled build or something wrong with the build itself.
Check the details on how to adjust your build configuration on: https://docs.travis-ci.com/user/common-build-problems/#Build-times-out-because-no-output-was-received

The build has been terminated

[130s]

Will open a PR against the origin. It'll fix things incl. ros-industrial#32