Making commit-sha 8 chars

Author: MaciejKaras

scripts/dev/contexts/evg-private-context

@@ -35,7 +35,7 @@ export NAMESPACE
 
 DEV_REPO_URL="268558157000.dkr.ecr.us-east-1.amazonaws.com/dev"
 STAGING_REPO_URL="268558157000.dkr.ecr.us-east-1.amazonaws.com/staging"
-COMMIT_SHA_SHORT=$(git rev-parse --short HEAD)
+COMMIT_SHA_SHORT=$(git rev-parse --short=8 HEAD)
 
 if [ "${is_patch:-false}" = "true" ]; then
   echo "is_patch is set, setting BASE_REPO_URL=${STAGING_REPO_URL}"