all: eliminate usage of global ProxyLogger

So setting up logging for ctrld binary and ctrld packages could be done
more easily, decouple the required setup for interactive vs daemon
running.

This is the first step toward replacing rs/zerolog libary with a
different logging library.

doh_test.go

@@ -157,20 +157,21 @@ func Test_ClientCertificateVerificationError(t *testing.T) {
 		},
 	}
 
+	ctx := context.Background()
 	for _, tc := range tests {
 		tc := tc
 		t.Run(tc.name, func(t *testing.T) {
 			t.Parallel()
-			tc.uc.Init()
-			tc.uc.SetupBootstrapIP()
-			r, err := NewResolver(tc.uc)
+			tc.uc.Init(ctx)
+			tc.uc.SetupBootstrapIP(ctx)
+			r, err := NewResolver(ctx, tc.uc)
 			if err != nil {
 				t.Fatal(err)
 			}
 			msg := new(dns.Msg)
 			msg.SetQuestion("verify.controld.com.", dns.TypeA)
 			msg.RecursionDesired = true
-			_, err = r.Resolve(context.Background(), msg)
+			_, err = r.Resolve(ctx, msg)
 			// Verify the error contains the expected certificate information
 			if err == nil {
 				t.Fatal("expected certificate verification error, got nil")