[fix] Travis build failed to create proper build tags due to default …

…shallow git clone

'git describe' won't work correctly if there is more than 50 (Travis default) commits from the last description (tag)
https://docs.travis-ci.com/user/customizing-the-build#git-clone-depth

ci/build.sh

@@ -18,7 +18,7 @@ if [ -n "$GITHUB_TOKEN" ]; then
   git config --global user.email "[email protected]"
   git config --global user.name "Travis CI"
   git remote add origin-repo https://${GITHUB_TOKEN}@github.com/SumoLogic/sumologic-kubernetes-collection.git > /dev/null 2>&1
-  git fetch origin-repo
+  git fetch --unshallow origin-repo
   git checkout $TRAVIS_PULL_REQUEST_BRANCH
 fi