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).

# Fixed URLs

## Fixed But Review Recommended
These URLs were fixed, but the https status was not OK. However, the https status was the same as the http request or http redirected to an https URL, so they were migrated. Your review is recommended.

* [ ] http://compose.docker.io/ (UnknownHostException) with 1 occurrences migrated to:
  https://compose.docker.io/ ([https](https://compose.docker.io/) result UnknownHostException).
* [ ] http://projects.spring.io/spring-boot/function-sam (404) with 1 occurrences migrated to:
  https://projects.spring.io/spring-boot/function-sam ([https](https://projects.spring.io/spring-boot/function-sam) result 404).

## Fixed Success
These URLs were switched to an https URL with a 2xx status. While the status was successful, your review is still recommended.

* [ ] http://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html with 1 occurrences migrated to:
  https://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html ([https](https://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html) result 200).
* [ ] http://www.reactive-streams.org/ with 2 occurrences migrated to:
  https://www.reactive-streams.org/ ([https](https://www.reactive-streams.org/) result 200).
* [ ] http://plugins.jetbrains.com/plugin/6546 with 1 occurrences migrated to:
  https://plugins.jetbrains.com/plugin/6546 ([https](https://plugins.jetbrains.com/plugin/6546) result 301).
* [ ] http://eclipse.org with 1 occurrences migrated to:
  https://eclipse.org ([https](https://eclipse.org) result 302).
* [ ] http://eclipse.org/m2e/ with 2 occurrences migrated to:
  https://eclipse.org/m2e/ ([https](https://eclipse.org/m2e/) result 302).
* [ ] http://www.springsource.com/developer/sts with 1 occurrences migrated to:
  https://www.springsource.com/developer/sts ([https](https://www.springsource.com/developer/sts) result 302).

# Ignored
These URLs were intentionally ignored.

* http://localhost with 11 occurrences

spring-cloud-function-deployer/src/test/resources/app/META-INF/MANIFEST.MF

@@ -10,5 +10,5 @@ Main-Class: org.springframework.boot.loader.JarLauncher
 Start-Class: org.springframework.cloud.function.test.FunctionApp
 Created-By: Apache Maven 3.5.0
 Build-Jdk: 1.8.0_131
-Implementation-URL: http://projects.spring.io/spring-boot/function-sam
+Implementation-URL: https://projects.spring.io/spring-boot/function-sam
  ple/