[GOREPORT] Fix linting issues maya/orchprovider/k8s/v1/k8s_test.go

[nsathyaseelan]

Goreport is showing several linting errors. Please see the report at
https://goreportcard.com/report/github.com/openebs/maya

This issue is to fix the errors in https://github.com/openebs/maya/blob/master/orchprovider/k8s/v1/k8s_test.go

Line 982: warning: "retuns" is a misspelling of "returns" (misspell)
Line 993: warning: "retuns" is a misspelling of "returns" (misspell)
Line 1048: warning: "retuns" is a misspelling of "returns" (misspell)
Line 1110: warning: "retuns" is a misspelling of "returns" (misspell)
Line 1172: warning: "retuns" is a misspelling of "returns" (misspell)
Line 1224: warning: "retuns" is a misspelling of "returns" (misspell)
Line 1281: warning: "retuns" is a misspelling of "returns" (misspell)
Line 1302: warning: "retuns" is a misspelling of "returns" (misspell)
Line 1760: warning: "comparision" is a misspelling of "comparison" (misspell)