Resource consumer is not exposing /metrics but /Metrics

[aespejel]

What happened:
Used the endpoint /BumpMetric to create fake metrics for Prometheus. When I tried to curl /metrics I got the following response:
Bad request. Not a POST request

What you expected to happen:
I expected to see something like this:
# HELP awesome.fake.metric info message.
# TYPE awesome.fake.metric gauge
awesome.fake.metric 0.000000

How to reproduce it (as minimally and precisely as possible):
Following the docs, after having it running inside kubernetes:

curl --data "metric=awesome.fake.metric&delta=9001&durationSec=600" http://\<EXTERNAL-IP\>:8080/BumpMetric
curl http://\<EXTERNAL-IP\>:8080/metrics

Anything else we need to know?:
Looks like 967a7c9 introduced this by mistake.
Environment:

• Kubernetes version (use kubectl version):
• Cloud provider or hardware configuration:
• OS (e.g. from /etc/os-release):
• Kernel (e.g. uname -a):
• Install tools:
• Others:

/kind bug

[Shnatsel]

/sig testing