add possibility to initiate replset via ip address

[heartwilltell]

No description provided.

[timvaillancourt]

This test needs a small update for the change in signature:

ok  	github.com/percona/mongodb-orchestration-tools/pkg/pod	1.014s	coverage: 92.9% of statements
# github.com/percona/mongodb-orchestration-tools/pkg/pod/k8s
pkg/pod/k8s/pods_test.go:84:10: not enough arguments in call to p.Update
	have ([]"github.com/percona/mongodb-orchestration-tools/vendor/k8s.io/api/core/v1".Pod, []"github.com/percona/mongodb-orchestration-tools/vendor/k8s.io/api/apps/v1".StatefulSet)
	want ([]"github.com/percona/mongodb-orchestration-tools/vendor/k8s.io/api/core/v1".Pod, []"github.com/percona/mongodb-orchestration-tools/vendor/k8s.io/api/apps/v1".StatefulSet, []"github.com/percona/mongodb-orchestration-tools/vendor/k8s.io/api/core/v1".Service)
pkg/pod/k8s/pods_test.go:96:10: not enough arguments in call to p.Update
	have ([]"github.com/percona/mongodb-orchestration-tools/vendor/k8s.io/api/core/v1".Pod, nil)
	want ([]"github.com/percona/mongodb-orchestration-tools/vendor/k8s.io/api/core/v1".Pod, []"github.com/percona/mongodb-orchestration-tools/vendor/k8s.io/api/apps/v1".StatefulSet, []"github.com/percona/mongodb-orchestration-tools/vendor/k8s.io/api/core/v1".Service)

fixed

[codecov]

Codecov Report

Merging #225 into master will decrease coverage by 0.98%.
The diff coverage is 23.25%.

@@            Coverage Diff             @@
##           master     #225      +/-   ##
==========================================
- Coverage   63.98%   62.99%   -0.99%     
==========================================
  Files          38       38              
  Lines        1877     1916      +39     
==========================================
+ Hits         1201     1207       +6     
- Misses        585      616      +31     
- Partials       91       93       +2

Impacted Files	Coverage Δ
pkg/pod/k8s/task.go	57.44% <6.45%> (-25.37%)	⬇️
pkg/pod/k8s/pods.go	86.36% <66.66%> (-4.87%)	⬇️

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[timvaillancourt]

Should this always return nil?

func (p *Pods) getServiceFromPod(...