Include extra useful entry properties when parsing snapshot

[BraydenNeale]

Snapshot entries can sometimes include other properties such as mssql_instance_name which can be useful. In this example the instance name is used to determine the performance counter prefix.

Needed to replace the old EF1 logic of:

self.entity = kwargs["associated_entity"]
instance_name = self.entity.properties['mssql_instance_name']

This adds those properties to a dictionary called: extra_properties
Accessible via:

  snapshot = self.get_snapshot()
  for mssql_entry in snapshot.get_process_groups_by_technology("MSSQL"):
      mssql_instance_name = mssql_entry.properties.extra_properties.get("mssql_instance_name")

Example snapshot with SQLEXPRESS

{
    "host_id": "0XC5B095DDA1FA0E61",
    "entries": [
        {
            "group_id": "0X8D6D1890DCD1FAA2",
            "node_id": "0X0000000000000000",
            "group_instance_id": "0X783C15D8FC8D78CD",
            "process_type": "6",
            "group_name": "MSSQL16.SQLEXPRESS",
            "processes": [
                {
                    "pid": "19492",
                    "process_name": "sqlservr.exe",
                    "properties": [
                        {
                            "WorkDir": "C:\\WINDOWS\\system32\\"
                        },
                        {
                            "CmdLine": "-sSQLEXPRESS"
                        },
                        {
                            "ExePath": "C:\\Program Files\\Microsoft SQL Server\\MSSQL16.SQLEXPRESS\\MSSQL\\Binn\\sqlservr.exe"
                        },
                        {
                            "ParentPid": "1680"
                        }
                    ]
                },
                {
                    "pid": "24500",
                    "process_name": "sqlceip.exe",
                    "properties": [
                        {
                            "WorkDir": "C:\\WINDOWS\\system32\\"
                        },
                        {
                            "CmdLine": "-Service SQLEXPRESS"
                        },
                        {
                            "ExePath": "C:\\Program Files\\Microsoft SQL Server\\MSSQL16.SQLEXPRESS\\MSSQL\\Binn\\sqlceip.exe"
                        },
                        {
                            "ParentPid": "1680"
                        }
                    ]
                }
            ],
            "properties": [
                {
                    "mssql_instance_name": "SQLEXPRESS"
                },
                {
                    "Technologies": "MSSQL,MSSQL,DOTNET,CLR"
                },
                {
                    "pgTechnologies": ".NET,CLR,Microsoft SQL Server"
                }
            ]
        }
    ],
    "containers": []
}