l2geth: skip `geth` console flake tests (#2384)

This code is not going to change before deprecation
of `l2geth` in favor of bedrock. Skip a couple of tests
that fail in CI that are not involved at all in consensus.

.changeset/four-flowers-run.md

+---
+'@eth-optimism/l2geth': patch
+---
+
+Skip some geth console tests that flake in CI

l2geth/cmd/geth/consolecmd_test.go

@@ -71,6 +71,7 @@ at block: 0 ({{niltime}})
 
 // Tests that a console can be attached to a running node via various means.
 func TestIPCAttachWelcome(t *testing.T) {
+	t.Skip()
 	// Configure the instance for IPC attachement
 	coinbase := "0x8605cdbbdb6d264aa742e77020dcbc58fcdce182"
 	var ipc string
@@ -98,6 +99,7 @@ func TestIPCAttachWelcome(t *testing.T) {
 }
 
 func TestHTTPAttachWelcome(t *testing.T) {
+	t.Skip()
 	coinbase := "0x8605cdbbdb6d264aa742e77020dcbc58fcdce182"
 	port := strconv.Itoa(trulyRandInt(1024, 65536)) // Yeah, sometimes this will fail, sorry :P
 	geth := runGeth(t,