**What**
- Update the documentation about secret management to note the changed
file location
- Remove the documentation on secret rotation, because this will not
currently work
- Update apikey-secret and ApiKeyProtected-Secrets to read secret values
from both the old and the new locations
**Why**
- Recent updates to faas-swarm and faas-netes changed the mount location
of secrets. These changes update the docs to reflect this change.
Signed-off-by: Lucas Roesler <roesler.lucas@gmail.com>
Following the existing README instructions would result in an error
when the user attempted to create the secret. This small change
remediates the instruction so that the secret is successfully created.
Signed-off-by: rgee0 <richard@technologee.co.uk>