Add additional flags to nmap.py (#5566) (#5576)

* Adding extra flag options for NMAP scaning udp_scan, icmp_timestamp and dns_resolve

* Update nmap.py

* Update plugins/inventory/nmap.py

Co-authored-by: Felix Fontein <felix@fontein.de>

* Updates as per felixfontein  suggestions

* Updates as per felixfontein  suggestions

* Update plugins/inventory/nmap.py

Co-authored-by: Felix Fontein <felix@fontein.de>

* Update plugins/inventory/nmap.py

Co-authored-by: Felix Fontein <felix@fontein.de>

* Update nmap.py

* Update changelogs/fragments/5566-additional-flags-nmap.yml

Co-authored-by: Felix Fontein <felix@fontein.de>

* Update changelogs/fragments/5566-additional-flags-nmap.yml

Co-authored-by: Felix Fontein <felix@fontein.de>

* Update 5566-additional-flags-nmap.yml

* Update nmap.py

Co-authored-by: Axis12 <3225945+axistwelve@users.noreply.github.com>
Co-authored-by: Felix Fontein <felix@fontein.de>
(cherry picked from commit 52c2849)

Co-authored-by: David Stuart <dave@axistwelve.com>

changelogs/fragments/5566-additional-flags-nmap.yml

@@ -0,0 +1,3 @@
+minor_changes:
+  - nmap inventory plugin - add new options ``udp_scan``, ``icmp_timestamp``, and ``dns_resolve`` for different types of scans (https://github.com/ansible-collections/community.general/pull/5566).
+

plugins/inventory/nmap.py

@@ -46,6 +46,25 @@
             description: use IPv6 type addresses
             type: boolean
             default: true
+        udp_scan:
+            description:
+                - Scan via UDP.
+                - Depending on your system you might need I(sudo=true) for this to work.
+            type: boolean
+            default: false
+            version_added: 6.1.0
+        icmp_timestamp:
+            description:
+                - Scan via ICMP Timestamp (C(-PP)).
+                - Depending on your system you might need I(sudo=true) for this to work.
+            type: boolean
+            default: false
+            version_added: 6.1.0
+        dns_resolve:
+            description: Whether to always (C(true)) or never (C(false)) do DNS resolution.
+            type: boolean
+            default: false
+            version_added: 6.1.0
     notes:
         - At least one of ipv4 or ipv6 is required to be True, both can be True, but they cannot both be False.
         - 'TODO: add OS fingerprinting'
@@ -166,6 +185,15 @@ def parse(self, inventory, loader, path, cache=True):
                 cmd.append('--exclude')
                 cmd.append(','.join(self._options['exclude']))
 
+            if self._options['dns_resolve']:
+                cmd.append('-n')
+
+            if self._options['udp_scan']:
+                cmd.append('-sU')
+
+            if self._options['icmp_timestamp']:
+                cmd.append('-PP')
+
             cmd.append(self._options['address'])
             try:
                 # execute