Add trigger phrases and status badge for e2e tests

This adds the trigger phrases for the e2e tests to the README.md and
also the build badge for the periodic job.
The two e2e test sets are described a bit more in the e2e README.md.

Signed-off-by: Lennart Jern <lennart.jern@est.tech>

README.md

@@ -4,6 +4,7 @@
 [![OpenSSF Scorecard](https://api.securityscorecards.dev/projects/github.com/metal3-io/baremetal-operator/badge)](https://securityscorecards.dev/viewer/?uri=github.com/metal3-io/baremetal-operator)
 [![Ubuntu daily main build status](https://jenkins.nordix.org/buildStatus/icon?job=metal3_daily_main_integration_test_ubuntu&subject=Ubuntu%20daily%20main)](https://jenkins.nordix.org/view/Metal3/job/metal3_daily_main_integration_test_ubuntu/)
 [![CentOS daily main build status](https://jenkins.nordix.org/buildStatus/icon?job=metal3_daily_main_integration_test_centos&subject=CentOS%20daily%20main)](https://jenkins.nordix.org/view/Metal3/job/metal3_daily_main_integration_test_centos/)
+[![BMO e2e periodic main](https://jenkins.nordix.org/view/Metal3%20Periodic/job/metal3-bmo-e2e-test-periodic/badge/icon?subject=BMO%20e2e%20periodic%20main)](https://jenkins.nordix.org/view/Metal3%20Periodic/job/metal3-bmo-e2e-test-periodic/)
 
 The Bare Metal Operator implements a Kubernetes API for managing bare metal
 hosts. It maintains an inventory of available hosts as instances of the
@@ -39,6 +40,13 @@ Eventually these tests will be replaced with BMO's own
 [e2e tests](test/e2e/README.md). BMO e2e tests are currently under active
 development. Here are the tests which run on different branches in BMO:
 
+**E2e tests:**
+
+* **/test metal3-bmo-e2e-test-pull** runs required BMO e2e tests on your PR. Works for main and release-0.5 branches.
+* **/test metal3-bmo-e2e-test-optional-pull** runs optional BMO e2e tests on your PR. These are under active development currently.
+
+For more details on the e2e tests, see [test/e2e/README.md](test/e2e/README.md).
+
 **Main branch:**
 
 * **/test-centos-e2e-integration-main** runs CAPM3 e2e integration tests with

test/e2e/README.md

@@ -11,14 +11,15 @@ in `config`.
 In the CI system we set up a pre-configured minikube cluster that is then used
 for the tests, as seen in [ci-e2e.sh](../../hack/ci-e2e.sh). This allows us to
 have control over the network and have a static configuration for Ironic and the
-Baremetal Operator. The script creates a VM to represent a BareMetalHost,
-and configures either VBMC or sushy-tools to be used as BMC.
+Baremetal Operator. The script creates a VM to represent a BareMetalHost, and
+configures either VBMC or sushy-tools to be used as BMC.
 
 Currently there are two sets of tests, which cannot be ran together in the same
-cluster. One is the "optional" set, currently consists of only the [upgrade tests](upgrade_test.go),
-and the "main" set, which are the ones required to run in every BMO PR. One can
-switch between these sets by manipulating the `GINKGO_FOCUS` and `GINKGO_SKIP` env
-vars. In the default setting, the script sets `GINKGO_SKIP` to `upgrade`.
+cluster. One is the "optional" set, currently consists of only the
+[upgrade tests](upgrade_test.go), and the "main" set, which are the ones
+required to run in every BMO PR. One can switch between these sets by
+manipulating the `GINKGO_FOCUS` and `GINKGO_SKIP` env vars. In the default
+setting, the script sets `GINKGO_SKIP` to `upgrade`.
 
 E.g. Here is how to run the E2E main tests:
 
@@ -34,12 +35,44 @@ export GINKGO_FOCUS="upgrade"
 ```
 
 It is also possible to run the tests with the fixture provider instead of
-Ironic. Without any changes, the whole suite (including optional tests) will be run.
-Please note, however, that it is quite questionable to call this configuration
-"end to end".
+Ironic. Without any changes, the whole suite (including optional tests) will be
+run. Please note, however, that it is quite questionable to call this
+configuration "end to end".
 
-Fixture provider is configured to be the default one. This is how to run the e2e test suite with it:
+Fixture provider is configured to be the default one. This is how to run the e2e
+test suite with it:
 
 ```bash
 make test-e2e
 ```
+
+## Tests
+
+Here is a list of the currently implemented tests. As mentioned above, we divide
+them into two sets, one required and one optional. The required tests must pass
+on every PR before merging. Optional tests may be triggerd for extra
+verification but are not expected to run on all PRs. All tests are checked with
+both redfish and ipmi protocols in CI.
+
+**Required tests:**
+
+- Inspection: Check that a BareMetalHost is registered and inspected when
+  created, and that it becomes available after the inspection.
+- External inspection: Check that a BareMetalHost, with inspection disabled and
+  hardware details added through an annotation, skips inspection, accepts the
+  hardware details from the annotation and becomes available.
+- Re-inspection: Check that an available BareMetalHost is re-inspected when the
+  inspect annotation is added and that this updates the hardware details.
+- Provisioning: Check that an available BareMetalHost can be provisioned, that
+  it can be detatched, deleted and re-created, with the status annotation,
+  without affecting the host. Finally checks that the BareMetalHost can be
+  deprovisioned and becomes available again.
+- Live-ISO: Check that an available BareMetalHost can be provisioned with a
+  live-ISO image.
+
+**Optional tests:**
+
+- Bare Metal Operator upgrade: Check that an older version of the Bare Metal
+  Operator works by creating a BareMetalHost with external inspection. Then
+  upgrade the Bare Metal Operator and check the the BareMetalHost can be
+  provisioned with the upgraded version.