URL Cleanup

This commit updates URLs to prefer the https protocol. Redirects are not followed to avoid accidentally expanding intentionally shortened URLs (i.e. if using a URL shortener).

# HTTP URLs that Could Not Be Fixed
These URLs were unable to be fixed. Please review them to see if they can be manually resolved.

* http://jcommander.org/apidocs/ (200) migrated to:
  http://jcommander.org/apidocs/ ([https](https://jcommander.org/apidocs/) result SSLHandshakeException).

# Fixed URLs

## Fixed Success
These URLs were fixed successfully.

* http://docs.spring.io/spring-framework/docs/current/javadoc-api/ migrated to:
  https://docs.spring.io/spring-framework/docs/current/javadoc-api/ ([https](https://docs.spring.io/spring-framework/docs/current/javadoc-api/) result 200).
* http://www.apache.org/licenses/LICENSE-2.0 migrated to:
  https://www.apache.org/licenses/LICENSE-2.0 ([https](https://www.apache.org/licenses/LICENSE-2.0) result 200).
* http://repo.spring.io/libs-milestone-local migrated to:
  https://repo.spring.io/libs-milestone-local ([https](https://repo.spring.io/libs-milestone-local) result 302).
* http://repo.spring.io/libs-snapshot-local migrated to:
  https://repo.spring.io/libs-snapshot-local ([https](https://repo.spring.io/libs-snapshot-local) result 302).
* http://repo.spring.io/release migrated to:
  https://repo.spring.io/release ([https](https://repo.spring.io/release) result 302).

# Ignored
These URLs were intentionally ignored.

* http://maven.apache.org/POM/4.0.0
* http://maven.apache.org/xsd/maven-4.0.0.xsd
* http://www.w3.org/2001/XMLSchema-instance

spring-shell-table/pom.xml

@@ -6,7 +6,7 @@
   ~ 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
+  ~      https://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,