Updated lodash 4.17.12 to 4.17.19

[bgaeddert]

yarn audit --no-color --groups dependencies
yarn audit v1.22.4
0 vulnerabilities found - Packages audited: 120
✨ Done in 1.78s.

[arm4b]

👍

This will also fix the existing builds in master branch due to st2-docker switching to new deployment model.

[punkrokk]

@bgaeddert will you please copy @blag's approach from here? StackStorm/st2chatops#156

[bgaeddert]

@punkrokk CicleCi shell does not seem to be respecting the null coalescing operator :- and is returning the <nil> for ST2_DOCKER_BRANCH rather than resolving as empty and using the default.

# Use DEPRECATED/all-in-one for now, we'll have to circle back around
# and fix this to use the master branch
echo "Cloning ${ST2_DOCKER_BRANCH:-DEPRECATED/all-in-one} branch of st2-docker"
git clone --branch ${ST2_DOCKER_BRANCH:-DEPRECATED/all-in-one} --depth 1 ${ST2_TEST_ENVIRONMENT} ~/st2-docker
Cloning <nil> branch of st2-docker
Cloning into '/home/circleci/st2-docker'...
warning: Could not find remote branch <nil> to clone.
fatal: Remote branch <nil> not found in upstream origin

Exited with code exit status 128
CircleCI received exit code 128```