RVRNEXT-5 make prepare-commit-msg accept fixup commits

scripts/gitHooks/prepare-commit-msg

@@ -7,7 +7,7 @@ if [[ "${BRANCH_NAME}" =~ $BRANCH_PATTERN ]]; then
     TICKET_ID=$(echo $BRANCH_NAME | sed -E "s@$BRANCH_PATTERN@\\2@")
 
     COMMIT_MESSAGE=$(head -n 1 $1)
-    COMMIT_MESSAGE_REGEX="^$TICKET_ID .*"
+    COMMIT_MESSAGE_REGEX="^(fixup! )?$TICKET_ID .*"
 
     if [[ ! "${COMMIT_MESSAGE}" =~ $COMMIT_MESSAGE_REGEX ]]; then
         sed -i.bak -e "1s/^/$TICKET_ID /" $1