Update e2e test splitter regex

Signed-off-by: Per Goncalves da Silva <[email protected]>

Author: Per Goncalves da Silva

test/e2e/split/main.go

@@ -162,15 +162,15 @@ func createChunkRegexp(numChunks, printChunk int, specs []string) (string, error
 	// Write out the regexp to focus chunk specs via `ginkgo -focus <re>`.
 	var reStr string
 	if len(chunk) == 1 {
-		reStr = fmt.Sprintf("%s .*", chunk[0])
+		reStr = fmt.Sprintf("^%s .*", chunk[0])
 	} else {
 		sb := strings.Builder{}
 		sb.WriteString(chunk[0])
 		for _, test := range chunk[1:] {
 			sb.WriteString("|")
 			sb.WriteString(test)
 		}
-		reStr = fmt.Sprintf("(%s) .*", sb.String())
+		reStr = fmt.Sprintf("^(%s) .*", sb.String())
 	}
 
 	return reStr, nil