Commit-Confirm Mechanic for PND

Description

This MR introduces a commit-confirm mechanic for changes to ONDs. A change created in a pending-state. A commit of this change by the operator pushed the change to the given OND. If the commit is not confirmed within 10 minutes (default. Use the GOSDN_CHANGE_TIMEOUT environment variable to change the timeout) is is rolled back automatically.

Related Issue

Closes #99 (closed)

Motivation and Context

How Has This Been Tested?

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

test/integration/cmdIntegration_test.go

@@ -153,7 +153,7 @@ func TestCmdIntegration(t *testing.T) {
 			hostname := guuid.New().String()
 			if err := cli.HTTPGet(
 				testAPIEndpoint,
-				"set",
+				"update",
 				"address="+testAddress,
 				"uuid="+did,
 				"sbi="+cliSbi,