test: use a less restrictive interface to allow vitess-tester to use …

…these functions

Signed-off-by: Manan Gupta <manan@planetscale.com>

go/test/endtoend/utils/utils.go

@@ -244,7 +244,7 @@ func AssertMatchesWithTimeout(t *testing.T, conn *mysql.Conn, query, expected st
 }
 
 // WaitForAuthoritative waits for a table to become authoritative
-func WaitForAuthoritative(t *testing.T, ks, tbl string, readVSchema func() (*interface{}, error)) error {
+func WaitForAuthoritative(t TestingT, ks, tbl string, readVSchema func() (*interface{}, error)) error {
 	timeout := time.After(60 * time.Second)
 	for {
 		select {
@@ -320,7 +320,7 @@ func WaitForTableDeletions(t *testing.T, vtgateProcess cluster.VtgateProcess, ks
 }
 
 // WaitForColumn waits for a table's column to be present
-func WaitForColumn(t testing.TB, vtgateProcess cluster.VtgateProcess, ks, tbl, col string) error {
+func WaitForColumn(t TestingT, vtgateProcess cluster.VtgateProcess, ks, tbl, col string) error {
 	timeout := time.After(60 * time.Second)
 	for {
 		select {
@@ -355,7 +355,7 @@ func WaitForColumn(t testing.TB, vtgateProcess cluster.VtgateProcess, ks, tbl, c
 				if !isMap {
 					break
 				}
-				if colName, exists := colDef["name"]; exists && colName == col {
+				if colName, exists := colDef["name"]; exists && strings.EqualFold(colName.(string), col) {
 					return nil
 				}
 			}