fix(core): Always use clusters parameter for ECS server group URLs (backport #10171)

[mergify]

Fix ECS Server Group URLs When onDemandClusterThreshold is Exceeded

Problem

When viewing ECS server groups in Spinnaker and the onDemandClusterThreshold is exceeded, the generated URLs fail to navigate to the correct server group. This happens because:

1. ECS provider requires using the clusters parameter for server group navigation
2. The current implementation uses the standard q, acct, and reg parameters which don't work properly for ECS when on-demand caching is disabled

This results in broken links for ECS server groups in the UI when the number of caches exceeds the threshold.

Solution

This PR modifies the ServerGroupsUrlBuilder.build method to use a different URL format specifically for ECS server groups:

// For ECS provider, use clusters parameter format
if (input.provider === 'ecs' || (input.provider && input.provider.includes('ecs'))) {
// Extract cluster name from server group name (remove version suffix)
const serverGroupParts = input.serverGroup.split('-');
let clusterName = input.serverGroup;
if (serverGroupParts.length > 1 && serverGroupParts[serverGroupParts.length - 1].match(/^v\d+$/)) {
clusterName = serverGroupParts.slice(0, -1).join('-');
}

// Use clusters parameter with account:clusterName format
return UrlBuilderUtils.buildUrl(href, { clusters: ${input.account}:${clusterName} });
}

// For other providers, use standard parameters
return UrlBuilderUtils.buildUrl(href, { q: input.serverGroup, acct: input.account, reg: input.region });

Testing

Testing was performed in an environment where the onDemandClusterThreshold was exceeded.

Before the fix:
URL: /#/applications/myapp/serverGroups?q=my-ecs-service-v001&acct=my-account&reg=us-west-2
Result: Empty view, no server group details displayed

After the fix:
URL: /#/applications/myapp/serverGroups?clusters=my-account:my-ecs-service
Result: Successfully displays the ECS server group details

The fix has been verified with various ECS server group naming patterns, including those with and without version suffixes.

Impact

This change:

• Fixes navigation to ECS server groups when onDemandClusterThreshold is exceeded
• Maintains backward compatibility for all other cloud providers
• Improves user experience by ensuring links work correctly in all scenarios

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  This is an automatic backport of pull request fix(core): Always use clusters parameter for ECS server group URLs #10171 done by Mergify.