[SC-5462] Fix tests in AclExtensionsSuite/ReflectionBackedAclClientSuite

## What changes were proposed in this pull request?

Fixes `AclExtensionsSuite` and `ReflectionBackedAclClientSuite`

## How was this patch tested?

Unit Tests

Author: Sameer Agarwal <[email protected]>

Closes apache#154 from sameeragarwal/fix-tests.

Author: sameeragarwal

sql/core/src/test/scala/com/databricks/sql/acl/ReflectionBackedAclClientSuite.scala

@@ -39,7 +39,7 @@ class ReflectionBackedAclClientSuite extends SparkFunSuite with SharedSQLContext
     sparkContextToken("usr1")
     driverToken(null)
     val input = Seq((tbl1, Select), (tbl1, Modify))
-    assert(input === client.getValidPermissions(input))
+    assert(input.toSet === client.getValidPermissions(input))
     assert(AclClientBackend.token === "usr1")
     assert(AclClientBackend.lastCommandArguments === Seq(
       ("/CATALOG/`default`/DATABASE/`db1`/TABLE/`tbl_x`", "SELECT"),
@@ -134,15 +134,15 @@ class AclClientBackend {
 
   def getValidPermissions(
       token: String,
-      requests: Traversable[(String, String)]): Set[(String, String)] = {
+      requests: Seq[(String, String)]): Set[(String, String)] = {
     AclClientBackend.token = token
     AclClientBackend.lastCommandArguments = requests.toSeq
     requests.toSet
   }
 
   def getOwners(
       token: String,
-      securables: Traversable[String]): Map[String, String] = {
+      securables: Seq[String]): Map[String, String] = {
     AclClientBackend.token = token
     AclClientBackend.lastCommandArguments = securables.toSeq
     securables.map(_ -> "USER_1").toMap