azure-sdk-for-java: [BUG] Spring Boot Application hangs during startup while retrieving Key Vault secrets

Describe the bug Spring Boot Application hangs during startup while retrieving secrets from Key Vault. Similar to following issues:

https://github.com/microsoft/azure-spring-boot/issues/909 https://github.com/microsoft/azure-spring-boot/issues/853

Exception or Stack Trace No error/exceptions shown

*** Reproduce Steps***

1. Create a spring boot project
2. Add maven dependencies as shown below
3. Create a SecretClient Bean by providing credential from MenagedIdentityCredential.

@Bean
    public ManagedIdentityCredential createAzureMSICredential() {
        return new ManagedIdentityCredentialBuilder().clientId(properties.getClientId()).build();
    }

 @Bean
    public SecretClient secretClient() {
        return new SecretClientBuilder().vaultUrl(properties.getUri())
                .credential(msi)
                .buildClient();
    }

1. Use secret client to get secret.

KeyVaultSecret secret = secretClient.getSecret(properties.getKey());

Expected behavior Expected to have secrets retrieved successfully and continue the spring boot startup.

Setup (please complete the following information):

• Spring Boot: 2.2.5.RELEASE
• Project Maven related dependencies:

       <dependency>
            <groupId>com.azure</groupId>
            <artifactId>azure-identity</artifactId>
            <version>1.1.0</version>
        </dependency>
        <dependency>
            <groupId>com.azure</groupId>
            <artifactId>azure-security-keyvault-secrets</artifactId>
            <version>4.2.0</version>
        </dependency>

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