Incorrect collect/index_packages results

Using the provided example, on https://public.purldb.io/api/collect/index_packages/ I post this:
```
{
"packages": [
{
"purl": "pkg:npm/less@1.0.32",
"addon_pipelines": [
"collect_symbols_ctags"
]
},
{
"purl": "pkg:npm/less",
"vers": "vers:npm/>=1.1.0|<=1.1.4"
},
{
"purl": "pkg:npm/foobar",
"addon_pipelines": [
"inspect_elf_binaries",
"collect_symbols_ctags"
]
}
],
"reindex": true,
"reindex_set": false
}

```

I get this response:
```JSON
{
"queued_packages_count": 0,
"queued_packages": [],
"requeued_packages_count": 16,
"requeued_packages": [
"pkg:npm/less@1.0.32",
"pkg:npm/less@1.0.32",
"pkg:npm/less@1.1.0",
"pkg:npm/less@1.1.0",
"pkg:npm/%40taskr/less@1.1.0",
"pkg:npm/%40brandcolors/less@1.1.0",
"pkg:npm/less@1.1.1",
"pkg:npm/less@1.1.1",
"pkg:npm/less@1.1.2",
"pkg:npm/less@1.1.2",
"pkg:npm/less@1.1.4",
"pkg:npm/less@1.1.4",
"pkg:npm/foobar@1.0.0",
"pkg:npm/foobar@1.0.0",
"pkg:npm/foobar@1.1.0",
"pkg:npm/foobar@1.1.0"
],
"unqueued_packages_count": 0,
"unqueued_packages": [],
"unsupported_packages_count": 0,
"unsupported_packages": [],
"unsupported_vers_count": 0,
"unsupported_vers": []
}
```

These two packages are completely unrelated and should NOT have been collected.
```JSON
"pkg:npm/%40taskr/less@1.1.0",
"pkg:npm/%40brandcolors/less@1.1.0",
```

I guess we ignore the namespace and query packages by name only.