Remove references to iptables

This is a follow-up of

containers/netavark#1353
containers/podman#27555

And related to https://issues.redhat.com/browse/RUN-3723

Signed-off-by: Mario Loriedo <[email protected]>

Author: l0rd

common/docs/containers.conf.5.md

@@ -298,9 +298,9 @@ Logging driver for the container. Currently available options are k8s-file, jour
 
 **log_path**=""
 
-Default path for container logs to be stored in. When empty, logs will be stored 
+Default path for container logs to be stored in. When empty, logs will be stored
 in the container's default storage and removed when the container is removed.
-A subdirectory named with the container ID will be created under the specified 
+A subdirectory named with the container ID will be created under the specified
 path, and the log file will have the default name `ctr.log` within that directory.
 This option can be overridden by the `--log-opt` flag.
 
@@ -429,7 +429,7 @@ The default value is empty which means that it will automatically choose CNI or
 already containers/images or CNI networks preset it will choose CNI.
 
 Before changing this value all containers must be stopped otherwise it is likely that
-iptables rules and network interfaces might leak on the host. A reboot will fix this.
+firewall rules and network interfaces might leak on the host. A reboot will fix this.
 
 **cni_plugin_dirs**=[]
 
@@ -510,7 +510,7 @@ and "$graphroot/networks" as rootless.
 
 The firewall driver to be used by netavark.
 The default is empty which means netavark will pick one accordingly. Current supported
-drivers are "iptables", "nftables", "none" (no firewall rules will be created) and "firewalld" (firewalld is
+drivers are "nftables", "none" (no firewall rules will be created) and "firewalld" (firewalld is
 experimental at the moment and not recommend outside of testing).
 
 **dns_bind_port**=53

common/libnetwork/netavark/run_test.go

@@ -99,9 +99,9 @@ var _ = Describe("run netavark", func() {
 			_ = netns.UnmountNS(netNSContainer.Path())
 			_ = netNSContainer.Close()
 		})
-		// Force iptables driver, firewalld is broken inside the extra
+		// Force nftables driver, firewalld is broken inside the extra
 		// namespace because it still connects to firewalld on the host.
-		t.Setenv("NETAVARK_FW", "iptables")
+		t.Setenv("NETAVARK_FW", "nftables")
 	})
 
 	JustBeforeEach(func() {

common/pkg/config/containers.conf

@@ -216,12 +216,12 @@ default_sysctls = [
 #
 #log_driver = "k8s-file"
 
-# Default path for container logs to be stored in. When empty, logs will be stored 
+# Default path for container logs to be stored in. When empty, logs will be stored
 # in the container's default storage and removed when the container is removed.
-# A subdirectory named with the container ID will be created under the specified 
+# A subdirectory named with the container ID will be created under the specified
 # path, and the log file will have the default name `ctr.log` within that directory.
 # This option can be overridden by the `--log-opt` flag.
-# 
+#
 #log_path = ""
 
 # Maximum size allowed for the container log file. Negative numbers indicate
@@ -359,7 +359,7 @@ default_sysctls = [
 # already containers/images or CNI networks preset it will choose CNI.
 #
 # Before changing this value all containers must be stopped otherwise it is likely that
-# iptables rules and network interfaces might leak on the host. A reboot will fix this.
+# firewall rules and network interfaces might leak on the host. A reboot will fix this.
 #
 #network_backend = ""
 
@@ -384,7 +384,7 @@ default_sysctls = [
 
 # The firewall driver to be used by netavark.
 # The default is empty which means netavark will pick one accordingly. Current supported
-# drivers are "iptables", "nftables", "none" (no firewall rules will be created) and "firewalld" (firewalld is
+# drivers are "nftables", "none" (no firewall rules will be created) and "firewalld" (firewalld is
 # experimental at the moment and not recommend outside of testing).
 #
 #firewall_driver = ""