fix: go.mod

[redref]

Running go mod vendor modified go.mod.

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[redref]

/assign @fanhaouu

[fanhaouu]

why remove github.com/prometheus/procfs? you can run 'go mod why' or 'go mod graph'

[redref]

WHen building docker file, we have an issue with :

 => ERROR [builder 5/6] RUN cd /workspace/github.com/carina-io/carina/cmd/carina-node && go build -ldflags="-X main.gitCommitID=`git rev-parse HEAD`" -gcflags '-N -l' -o /tmp/carina-node .                                            0.5s
------
 > [builder 5/6] RUN cd /workspace/github.com/carina-io/carina/cmd/carina-node && go build -ldflags="-X main.gitCommitID=`git rev-parse HEAD`" -gcflags '-N -l' -o /tmp/carina-node .:
#0 0.436 go: updates to go.mod needed, disabled by -mod=vendor
#0 0.436 	(Go version in go.mod is at least 1.14 and vendor directory exists.)
#0 0.436 	to update it:
#0 0.436 	go mod tidy
------
Dockerfile:13
--------------------
  11 |     # Build
  12 |     RUN echo Commit: `git log --pretty='%s%b%B' -n 1`
  13 | >>> RUN cd $WORKSPACE/cmd/carina-node && go build -ldflags="-X main.gitCommitID=`git rev-parse HEAD`" -gcflags '-N -l' -o /tmp/carina-node .
  14 |     RUN cd $WORKSPACE/cmd/carina-controller && go build -ldflags="-X main.gitCommitID=`git rev-parse HEAD`" -gcflags '-N -l' -o /tmp/carina-controller .
  15 |     
--------------------

Here the go mod why :

$ go mod graph | grep procfs
github.com/carina-io/carina github.com/prometheus/procfs@v0.7.3
github.com/prometheus/client_golang@v1.12.1 github.com/prometheus/procfs@v0.7.3
github.com/prometheus/procfs@v0.7.3 github.com/google/go-cmp@v0.5.4
github.com/prometheus/procfs@v0.7.3 golang.org/x/sync@v0.0.0-20201207232520-09787c993a3a
github.com/prometheus/procfs@v0.7.3 golang.org/x/sys@v0.0.0-20210124154548-22da62e12c0c
k8s.io/apiextensions-apiserver@v0.25.0 github.com/prometheus/procfs@v0.7.3
k8s.io/component-base@v0.25.0 github.com/prometheus/procfs@v0.7.3
sigs.k8s.io/controller-runtime@v0.11.1 github.com/prometheus/procfs@v0.6.0
github.com/prometheus/client_golang@v1.11.0 github.com/prometheus/procfs@v0.6.0
github.com/prometheus/procfs@v0.6.0 github.com/google/go-cmp@v0.5.4
github.com/prometheus/procfs@v0.6.0 golang.org/x/sync@v0.0.0-20201207232520-09787c993a3a
github.com/prometheus/procfs@v0.6.0 golang.org/x/sys@v0.0.0-20210124154548-22da62e12c0c
github.com/prometheus/client_golang@v1.7.1 github.com/prometheus/procfs@v0.1.3
github.com/prometheus/procfs@v0.1.3 github.com/google/go-cmp@v0.3.1
github.com/prometheus/procfs@v0.1.3 golang.org/x/sync@v0.0.0-20190911185100-cd5d95a43a6e
github.com/prometheus/procfs@v0.1.3 golang.org/x/sys@v0.0.0-20200106162015-b016eb3dc98e
github.com/prometheus/client_golang@v1.0.0 github.com/prometheus/procfs@v0.0.2
github.com/prometheus/common@v0.4.1 github.com/prometheus/procfs@v0.0.0-20181005140218-185b4288413d
github.com/prometheus/procfs@v0.0.2 golang.org/x/sync@v0.0.0-20181221193216-37e7f081c4d4