Export envs from /etc/conf.d (#351)

Author: kke

go.mod

@@ -17,7 +17,7 @@ require (
 	github.com/gofrs/uuid v4.2.0+incompatible // indirect
 	github.com/hashicorp/go-version v1.4.0 // indirect
 	github.com/k0sproject/dig v0.2.0
-	github.com/k0sproject/rig v0.5.0
+	github.com/k0sproject/rig v0.6.0
 	github.com/logrusorgru/aurora v2.0.3+incompatible
 	github.com/masterzen/simplexml v0.0.0-20190410153822-31eea3082786 // indirect
 	github.com/masterzen/winrm v0.0.0-20211231115050-232efb40349e // indirect

go.sum

@@ -226,8 +226,8 @@ github.com/jstemmer/go-junit-report v0.0.0-20190106144839-af01ea7f8024/go.mod h1
 github.com/jstemmer/go-junit-report v0.9.1/go.mod h1:Brl9GWCQeLvo8nXZwPNNblvFj/XSXhF0NWZEnDohbsk=
 github.com/k0sproject/dig v0.2.0 h1:cNxEIl96g9kqSMfPSZLhpnZ0P8bWXKv08nxvsMHop5w=
 github.com/k0sproject/dig v0.2.0/go.mod h1:rBcqaQlJpcKdt2x/OE/lPvhGU50u/e95CSm5g/r4s78=
-github.com/k0sproject/rig v0.5.0 h1:rtcX8W+UrU7uxJcBBCpyQNB2JDspyKpqgB+2kCuwp7I=
-github.com/k0sproject/rig v0.5.0/go.mod h1:myOVP6gFhWATqL2iOuwKL/2hg90ZkyMqqTssx2fjWjM=
+github.com/k0sproject/rig v0.6.0 h1:KpnEeFYguLft95pvF+Z6OsfkthAsFK/Hz30eJWx9chs=
+github.com/k0sproject/rig v0.6.0/go.mod h1:myOVP6gFhWATqL2iOuwKL/2hg90ZkyMqqTssx2fjWjM=
 github.com/k0sproject/version v0.3.0 h1:6HAn8C29+WVksGCzbQvQ9feEJpUZ0iHD8GebIQMiftQ=
 github.com/k0sproject/version v0.3.0/go.mod h1:oEjuz2ItQQtAnGyRgwEV9m5R6/9rjoFC6EiEEzbkFdI=
 github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51 h1:Z9n2FFNUXsshfwJMBgNA0RU6/i7WVaAegv3PtuIHPMs=