Modify wrong of ssh-key file path in build.go.

Author: itouri

build.go

@@ -187,10 +187,10 @@ Environment Variables:
 	cmd("go", "build", "-i", "./vendor/...")
 	cmd("go", "build", "-ldflags", LDFLAGS, "-v", "./cmd/openvdc")
 	cmd("go", "build", "-ldflags", LDFLAGS+
-		"-X 'main.HostRsaKeyPath=/etc/openvdc/ssh/host_rsa_key '" +
-		"-X 'main.HostEcdsaKeyPath=/etc/openvdc/ssh/host_ecdsa_key '" +
-		"-X 'main.HostEd25519KeyPath=/etc/openvdc/ssh/host_ed25519_key '" +
-		"-X 'main.DefaultConfPath=/etc/openvdc/executor.toml '", "-v", "./cmd/openvdc-executor")
+		" -X 'main.HostRsaKeyPath=/etc/openvdc/ssh/host_rsa_key'" +
+		" -X 'main.HostEcdsaKeyPath=/etc/openvdc/ssh/host_ecdsa_key'" +
+		" -X 'main.HostEd25519KeyPath=/etc/openvdc/ssh/host_ed25519_key'" +
+		" -X 'main.DefaultConfPath=/etc/openvdc/executor.toml'", "-v", "./cmd/openvdc-executor")
 	cmd("go", "build", "-ldflags", LDFLAGS+"-X 'main.DefaultConfPath=/etc/openvdc/scheduler.toml'", "-v", "./cmd/openvdc-scheduler")
 
 	//Build lxc-template