Update github.com/buger/goterm commit hash to c206103 (#133)

This PR contains the following updates:

| Package | Type | Update | Change | References |
|---|---|---|---|---|
| github.com/buger/goterm | require | digest | `v0.0.0-20180423150900-6d19e6a8df12` -> `c206103` | [source](https://togithub.com/buger/goterm) |

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go.mod

@@ -2,7 +2,7 @@ module github.com/qlik-oss/corectl
 
 require (
 	github.com/BurntSushi/toml v0.3.1 // indirect
-	github.com/buger/goterm v0.0.0-20180423150900-6d19e6a8df12
+	github.com/buger/goterm v0.0.0-20190225113744-c206103e1f37
 	github.com/cpuguy83/go-md2man v1.0.8 // indirect
 	github.com/gorilla/websocket v1.4.0 // indirect
 	github.com/inconshreveable/mousetrap v1.0.0 // indirect

go.sum

@@ -3,6 +3,7 @@ github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03
 github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8=
 github.com/buger/goterm v0.0.0-20180423150900-6d19e6a8df12 h1:aZVdiV35VTHoMJnL2GcJFxuedXBJUJx5YRw1sif1XN4=
 github.com/buger/goterm v0.0.0-20180423150900-6d19e6a8df12/go.mod h1:u9UyCz2eTrSGy6fbupqJ54eY5c4IC8gREQ1053dK12U=
+github.com/buger/goterm v0.0.0-20190225113744-c206103e1f37/go.mod h1:u9UyCz2eTrSGy6fbupqJ54eY5c4IC8gREQ1053dK12U=
 github.com/coreos/etcd v3.3.10+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE=
 github.com/coreos/go-etcd v2.0.0+incompatible/go.mod h1:Jez6KQU2B/sWsbdaef3ED8NzMklzPG4d5KIOhIy30Tk=
 github.com/coreos/go-semver v0.2.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=