Many README files and other docs contained a link to a an appspot
tracking app that is no longer active. Following the links leads to an
error about Go 1.9 no longer being supported. Go 1.9 support was dropped
in appspot in 2019 and disabled June 2020.
This also resulted in a broken image link displaying when viewing these
files on GitHub. Since the app is no longer functioning, and since it
causes a potentially (but granted, minor) confusing error to display,
this just removes those links as I don't believe they are needed
anymore.
Signed-off-by: Sean McGinnis <sean.mcginnis@gmail.com>
1. Move fluentd-gcp to be a core cluster addon, rather than a contrib.
2. Get rid of the synthetic logger under contrib, since the exact same
synthetic logger was also included in the logging-demo.
3. Move the logging-demo to examples, since it's effectively an example.
We should also consider adding on a GCP section to the logging-demo
example :)
