tests: introduce e2e suite (#422)

* mock: implement GetStatsSummary

Signed-off-by: Paulo Pires <pjpires@gmail.com>

* make: use skaffold to deploy vk

Signed-off-by: Paulo Pires <pjpires@gmail.com>

* test: add an e2e test suite

Signed-off-by: Paulo Pires <pjpires@gmail.com>

* test: add vendored code

Signed-off-by: Paulo Pires <pjpires@gmail.com>

* docs: update README.md

Signed-off-by: Paulo Pires <pjpires@gmail.com>

* ci: run e2e on circleci

Signed-off-by: Paulo Pires <pjpires@gmail.com>

* make: improve the skaffold target

Signed-off-by: Paulo Pires <pjpires@gmail.com>

* e2e: fix defer pod deletion

Signed-off-by: Paulo Pires <pjpires@gmail.com>

* e2e: improve instructions

Signed-off-by: Paulo Pires <pjpires@gmail.com>

* makefile: default shell is bash

Signed-off-by: Paulo Pires <pjpires@gmail.com>

.gitignore

@@ -7,6 +7,8 @@ bin/
 
 # Certificates
 *.pem
+!hack/skaffold/virtual-kubelet/vkubelet-mock-0-crt.pem
+!hack/skaffold/virtual-kubelet/vkubelet-mock-0-key.pem
 
 # Test binary, build with `go test -c`
 *.test
@@ -21,7 +23,6 @@ bin/
 /dist
 /build
 /cover
-/test
 
 # Test credentials file
 credentials.json