Update external docs

Author: garrett

external/bots/README.md

@@ -94,17 +94,24 @@ When generating a new personal access token, the scope only needs to
 encompass `public_repo` (or `repo` if you're accessing a private repo).
 
 If you'd like to download Red Hat-only internal images from S3, you'll
-need to create a key file in `~/.config/cockpit-dev/s3-keys/[endpoint]`.
-The contents of this file should be a single line containing the "access
-key" and the "secret key" separated by whitespace.
+need to create a key file in `~/.config/cockpit-dev/s3-keys/[domain]`.
+The `[domain]` can be any non-toplevel domain which contains the S3 URL
+in question.  The contents of this file should be a single line
+containing the "access key" and the "secret key" separated by
+whitespace.
 
-For the currently configured mirrors this means that you'd expect to
-have the following files:
+For the currently configured mirrors this means that you'd likely have the
+following file:
 
+- `~/.config/cockpit-dev/s3-keys/linodeobjects.com`
+
+For more control, you could also use the following:
+
+- `~/.config/cockpit-dev/s3-keys/cockpit-images.eu-central-1.linodeobjects.com`
 - `~/.config/cockpit-dev/s3-keys/eu-central-1.linodeobjects.com`
-- `~/.config/cockpit-dev/s3-keys/us-east-1.linodeobjects.com`
+- either of the above, with `us-east` instead of `eu-central`
 
-each each file would be a single line which looks like
+each file would be a single line which looks like
 
 ```
 EEVIDIDFSOQ0ABJ2LGTT    009rKOypIoqO44Q3VQGRyYPfugi84zANHF0pOW9f

external/source/test/README.md

@@ -78,19 +78,18 @@ You can set these environment variables to configure the test suite:
                   "centos-8-stream"
                   "debian-stable"
                   "debian-testing"
-                  "fedora-32"
                   "fedora-33"
+                  "fedora-34"
                   "fedora-coreos"
                   "fedora-testing"
-                  "rhel-7-9"
-                  "rhel-8-3"
-                  "rhel-8-3-distropkg"
                   "rhel-8-4"
                   "rhel-8-4-distropkg"
-                  "rhel-atomic"
+                  "rhel-8-5"
+                  "rhel-8-5-distropkg"
+                  "rhel-9-0"
                   "ubuntu-2004"
                   "ubuntu-stable"
-               "fedora-32" is the default (bots/machine/machine_core/constants.py)
+               "fedora-33" is the default (bots/machine/machine_core/constants.py)
 
     TEST_JOBS  How many tests to run in parallel.  The default is 1.
 
@@ -106,6 +105,9 @@ You can set these environment variables to configure the test suite:
     TEST_SHOW_BROWSER  Set to run browser interactively. When not specified,
                        browser is run in headless mode.
 
+    TEST_TIMEOUT_FACTOR Scale normal timeouts by given integer. Useful for
+                        slow/busy testbeds or architectures.
+
 ## Test machines and their images
 
 The code under test is executed in one or more dedicated virtual