[contract_manager] make solana rpcs configurable (#1646)

I'm hitting errors using the mainnet-beta endpoint when trying to deploy the entropy contract. This change makes the RPCs configurable in the functions so I can pass in a different RPC in the script.

The right thing to do here is probably to load the solana rpc urls from configuration files in the chains directory, but doesn't seem worth it to do that now.

contract_manager/src/governance.ts

@@ -42,6 +42,9 @@ class InvalidTransactionError extends Error {
   }
 }
 
+// A registry of solana RPC nodes for each cluster.
+export type SolanaRpcRegistry = (cluster: PythCluster) => string;
+
 export class SubmittedWormholeMessage {
   constructor(
     public emitter: PublicKey,
@@ -58,12 +61,10 @@ export class SubmittedWormholeMessage {
    */
   static async fromTransactionSignature(
     signature: string,
-    cluster: PythCluster
+    cluster: PythCluster,
+    registry: SolanaRpcRegistry = getPythClusterApiUrl
   ): Promise<SubmittedWormholeMessage> {
-    const connection = new Connection(
-      getPythClusterApiUrl(cluster),
-      "confirmed"
-    );
+    const connection = new Connection(registry(cluster), "confirmed");
 
     const txDetails = await connection.getParsedTransaction(signature);
     const sequenceLogPrefix = "Sequence: ";
@@ -151,9 +152,12 @@ export class WormholeEmitter {
     return this.wallet.publicKey;
   }
 
-  async sendMessage(payload: Buffer) {
+  async sendMessage(
+    payload: Buffer,
+    registry: SolanaRpcRegistry = getPythClusterApiUrl
+  ) {
     const provider = new AnchorProvider(
-      new Connection(getPythClusterApiUrl(this.cluster), "confirmed"),
+      new Connection(registry(this.cluster), "confirmed"),
       this.wallet,
       {
         commitment: "confirmed",
@@ -296,11 +300,11 @@ export class Vault extends Storable {
    * The wallet should be a multisig signer of the vault
    * @param wallet
    */
-  public connect(wallet: Wallet): void {
-    this.squad = SquadsMesh.endpoint(
-      getPythClusterApiUrl(this.cluster),
-      wallet
-    );
+  public connect(
+    wallet: Wallet,
+    registry: SolanaRpcRegistry = getPythClusterApiUrl
+  ): void {
+    this.squad = SquadsMesh.endpoint(registry(this.cluster), wallet);
   }
 
   getSquadOrThrow(): SquadsMesh {
@@ -311,9 +315,9 @@ export class Vault extends Storable {
   /**
    * Gets the emitter address of the vault
    */
-  public async getEmitter() {
+  public async getEmitter(registry: SolanaRpcRegistry = getPythClusterApiUrl) {
     const squad = SquadsMesh.endpoint(
-      getPythClusterApiUrl(this.cluster),
+      registry(this.cluster),
       new NodeWallet(Keypair.generate()) // dummy wallet
     );
     return squad.getAuthorityPDA(this.key, 1);