[KYUUBI #295][INFRA] Add licenses for some yml files

fixed #295
Squashed commit of the following:

commit 4c8fbd3c1a14f4b01294aa07b1d603e1d0ded44a
Author: fwang12 <fwang12@ebay.com>
Date:   Mon Jan 18 00:34:11 2021 +0800

    Add licenses for some yml files

.readthedocs.yml

@@ -1,4 +1,3 @@
-#
 # Licensed to the Apache Software Foundation (ASF) under one or more
 # contributor license agreements.  See the NOTICE file distributed with
 # this work for additional information regarding copyright ownership.
@@ -6,14 +5,13 @@
 # (the "License"); you may not use this file except in compliance with
 # the License.  You may obtain a copy of the License at
 #
-#    http://www.apache.org/licenses/LICENSE-2.0
+# http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-#
 
 version: 2
 

.travis.yml

@@ -1,4 +1,3 @@
-#
 # Licensed to the Apache Software Foundation (ASF) under one or more
 # contributor license agreements.  See the NOTICE file distributed with
 # this work for additional information regarding copyright ownership.
@@ -6,14 +5,13 @@
 # (the "License"); you may not use this file except in compliance with
 # the License.  You may obtain a copy of the License at
 #
-#    http://www.apache.org/licenses/LICENSE-2.0
+# http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-#
 
 sudo: required
 

_config.yml

@@ -1 +1,16 @@
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 theme: jekyll-theme-leap-day

codecov.yml

@@ -1,3 +1,18 @@
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 codecov:
   token: 6c25f14f-ec5c-40d2-b2e2-482013acca13
 

kyuubi-common/src/main/scala/org/apache/kyuubi/service/KinitAuxiliaryService.scala

@@ -84,4 +84,3 @@ class KinitAuxiliaryService() extends AbstractService("KinitAuxiliaryService") {
     }
   }
 }
-

kyuubi-common/src/main/scala/org/apache/kyuubi/service/authentication/AnonymousAuthenticationProviderImpl.scala

@@ -14,6 +14,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.apache.kyuubi.service.authentication
 
 /**

kyuubi-common/src/main/scala/org/apache/kyuubi/service/authentication/KyuubiAuthenticationFactory.scala

@@ -17,7 +17,6 @@
 
 package org.apache.kyuubi.service.authentication
 
-
 import java.io.IOException
 import javax.security.auth.login.LoginException
 import javax.security.sasl.Sasl

kyuubi-common/src/main/scala/org/apache/kyuubi/service/authentication/KyuubiDelegationTokenManager.scala

@@ -34,7 +34,6 @@ case class KyuubiDelegationTokenManager(
   }
 }
 
-
 object KyuubiDelegationTokenManager {
 
   def apply(conf: KyuubiConf): KyuubiDelegationTokenManager = {