Fix webhook panic after refresh

[mchaynes]

Description

Fixes #85

The reason the panic happened was due to a mismatch between the properties produced by Read and the properties expected by Diff. You can see the difference in output states in more detail below, but the TL;DR is that we were adding an extra object with the key __inputs in our output property map upon Create and Update. Read did not stuff values into the __inputs object after reading.

In order to simplify things, I lifted every key we previously stored in __inputs to the top level, while still handling the old state. So when users upgrade to this new version, on pulumi up or pulumi refresh, they will see a diff as if we are adding additional output properties, and removing old properties. We don't do this __inputs thing in any other providers (See pulumi-command for example)

Additionally, I upgraded examples/go.mod to go1.19 so that I could upgrade our pinned version of pulumi/pulumi/sdk and pulumi/pulumi/pkg.

State

Before This PR

Before Refresh:

"inputs": {
    "active": true,
    "displayName": "yaml-webhook",
    "organizationName": "service-provider-test-org",
    "payloadUrl": "https://google.com"
},
"outputs": {
    "__inputs": {
        "active": true,
        "displayName": "yaml-webhook",
        "organizationName": "service-provider-test-org",
        "payloadUrl": "https://google.com"
    },
    "name": "03dbae8b"
},

After Refresh

"inputs": {
    "__inputs": {
        "active": true,
        "displayName": "yaml-webhook",
        "organizationName": "service-provider-test-org",
        "payloadUrl": "https://google.com"
    },
    "name": "03dbae8b"
},
"outputs": {
    "active": true,
    "displayName": "yaml-webhook",
    "organizationName": "service-provider-test-org",
    "payloadUrl": "https://google.com",
    "secret": ""
},

After This PR

(Still handles old state where __inputs was defined)

"inputs": {
    "active": true,
    "displayName": "yaml-webhook",
    "organizationName": "service-provider-test-org",
    "payloadUrl": "https://google.com",
    "secret": ""
},
"outputs": {
    "active": true,
    "displayName": "yaml-webhook",
    "name": "03dbae8b",
    "organizationName": "service-provider-test-org",
    "payloadUrl": "https://google.com"
},

Testing

• Added new test cases to check that refresh works in nodejs and yaml.

Manual verification of upgrade

v0.1.6 --> PR version, with refresh

1. Verified installed v0.1.6 version of the pulumi-service provider.
2. Ran pulumi up in examples/yaml-webhooks.
3. Ran pulumi refresh
4. Upgraded pulumi-service provider to PR version.
5. Ran pulumi up
6. Observed pulumi up ran successfully and lifted values from __inputs to top-level outputs

v0.1.6 --> PR version, without refresh on v0.1.6

1. Verified installed v0.1.6 version of the pulumi-service provider.
2. Ran pulumi up in examples/yaml-webhooks.
3. Upgraded pulumi-service provider to PR version.
4. Ran pulumi up
5. Observed pulumi up ran successfully and lifted values from __inputs to top-level outputs

[blampe]

Ah I figured the __inputs was some Pulumi thing, I guess not! Nice cleanup.