Changed the type of forward and masquerade options from str to bool

* Breaking Change
* Fixes #582

Signed-off-by: Hideki Saito <saito@fgrep.org>

tests/integration/targets/firewalld/tasks/masquerade_test_cases.yml

@@ -114,60 +114,3 @@
       ansible.builtin.assert:
         that:
           - result is not changed
-
-# Validate backwards compatible behavior until masquerade is switched from string to boolean type
-- name: Masquerade enabled when masquerade is non-boolean string and state is enabled
-  block:
-    - name: Testing enable masquerade
-      ansible.posix.firewalld:
-        zone: trusted
-        masquerade: some string
-        permanent: true
-        state: enabled
-      register: result
-
-    - name: Assert masquerade is enabled
-      ansible.builtin.assert:
-        that:
-          - result is changed
-
-    - name: Testing enable masquerade (verify not changed)
-      ansible.posix.firewalld:
-        zone: trusted
-        masquerade: some string
-        permanent: true
-        state: enabled
-      register: result
-
-    - name: Assert masquerade is enabled (verify not changed)
-      ansible.builtin.assert:
-        that:
-          - result is not changed
-
-- name: Masquerade disabled when masquerade is non-boolean string and state is disabled
-  block:
-    - name: Testing disable masquerade
-      ansible.posix.firewalld:
-        zone: trusted
-        masquerade: some string
-        permanent: true
-        state: disabled
-      register: result
-
-    - name: Assert masquerade is disabled
-      ansible.builtin.assert:
-        that:
-          - result is changed
-
-    - name: Testing disable masquerade (verify not changed)
-      ansible.posix.firewalld:
-        zone: trusted
-        masquerade: some string
-        permanent: true
-        state: disabled
-      register: result
-
-    - name: Assert masquerade is disabled (verify not changed)
-      ansible.builtin.assert:
-        that:
-          - result is not changed