chore(cleanup): remove deprecated integration test code (#102)

This commit removes code that dealt with setting up kubernetes
apiserver, etcd & kubectl binaries to form a mocked control
plane. This control plane was used to run experiments and hence
test the correctness of various dope controllers.

Above control plane based testing is no longer required since
d-operators has started to make use of local docker registry,
k3s and experiments (see test/experiments) to achieve above goals
with minimal glue logic (see test/e2e/suite.sh).

In addition, this new way to run E to E tests is now baked into
d-operators GitHub actions as well (refer to previous commit).
These actions can proactively detect error injections if any during
pull requests.

Signed-off-by: AmitKumarDas <[email protected]>

Author: Amit Kumar Das

go.mod

@@ -7,10 +7,7 @@ require (
 	github.com/go-resty/resty/v2 v2.2.0
 	github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b
 	github.com/google/go-cmp v0.4.0
-	github.com/magefile/mage v1.9.0
-	github.com/onsi/gomega v1.8.1
 	github.com/pkg/errors v0.9.1
-	gopkg.in/resty.v1 v1.12.0
 	k8s.io/apiextensions-apiserver v0.17.3
 	k8s.io/apimachinery v0.17.3
 	k8s.io/client-go v0.17.3

go.sum

@@ -203,8 +203,6 @@ github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/pty v1.1.5/go.mod h1:9r2w37qlBe7rQ6e1fg1S/9xpWHSnaqNdHD3WcMdbPDA=
 github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
-github.com/magefile/mage v1.9.0 h1:t3AU2wNwehMCW97vuqQLtw6puppWXHO+O2MHo5a50XE=
-github.com/magefile/mage v1.9.0/go.mod h1:z5UZb/iS3GoOSn0JgWuiw7dxlurVYTu+/jHXqQg881A=
 github.com/magiconair/properties v1.8.0/go.mod h1:PppfXfuXeibc/6YijjN8zIbojt8czPbwD3XqdrwzmxQ=
 github.com/mailru/easyjson v0.0.0-20160728113105-d5b7844b561a/go.mod h1:C1wdFJiN94OJF2b5HbByQZoLdCWB1Yqtg26g4irojpc=
 github.com/mailru/easyjson v0.0.0-20180823135443-60711f1a8329/go.mod h1:C1wdFJiN94OJF2b5HbByQZoLdCWB1Yqtg26g4irojpc=