[CI]Chaostest suite initiation (#5793)

* Initiate chaostest cli test suite: singlenodeheight on one dev node
    Added chaostest stages in CI
    Added new docker/k8s resources and environments to CI
    Added new chaos-only tag to gitlab-ci.yml

* Update .maintain/chaostest/src/commands/singlenodeheight/index.js

Co-authored-by: Max Inden <mail@max-inden.de>

* change nameSpace to namespace(one word)

* update chaos ci job to match template

* rename build-pr ci stage to docker [chaos:basic]

* test gitlab-ci [chaos:basic]

* Update .gitlab-ci.yml

* add new build-chaos-only condition

* add *default-vars to singlenodeheight [chaos:basic]

* change build-only to build-rules on substrate jobs [chaos:basic]

* test and change when:on_success to when:always [chaos:basic]

* resolve conflicts and test [chaos:basic]

Co-authored-by: Max Inden <mail@max-inden.de>
Co-authored-by: Denis Pisarev <denis.pisarev@parity.io>

substrate/.maintain/chaostest/src/config/README.md

@@ -0,0 +1,34 @@
+chaostest CONFIG
+=========
+
+Since deployment can behave differently, we want to keep a state between phases including different test subjects.
+
+# Content
+The state could include informations such as:
+```
+{
+    namespace,
+    image,
+    bootnode: {
+        podname,
+        ip,
+        port,
+        peerId,
+        privateKey,
+        publicKey
+    },
+    nodes: [{
+        podname,
+        ip,
+        port,
+        nodeType: 'validator' | 'bootnode' | ,
+        privateKey (validator only),
+        publicKey (validator only)
+    }]
+}
+```
+
+# TODO
+k8s configuration
+chainspec
+chaos-agent