Add @timestamps to findings, map more fields

vulnwhisp/frameworks/nessus.py

@@ -35,6 +35,7 @@ class NessusAPI(object):
         'host': 'asset',
         'name': 'plugin_name',
         'os': 'operating_system',
+        'see also': 'exploitability',
         'system type': 'category',
         'vulnerability state': 'state'
     }

vulnwhisp/frameworks/qualys_vuln.py

@@ -83,6 +83,7 @@ class qualysVulnScan:
         'cve_id': 'cve',
         'cvss_base': 'cvss',
         'cvss3_base': 'cvss3',
+        'impact': 'synopsis',
         'ip_status': 'state',
         'os': 'operating_system',
         'qid': 'plugin_id',