Parse environment variable and return boolean representation of string, or default value if environment variable is unset.

If environment variable is set, return set value, otherwise return default value.

Parse environment variable and return integer representation of string, or default value if environment variable is unset.

IsValidNetworkPolicyEnforcingMode checks if the input string matches any of the enum values.

None : no network policy enforcement.

Standard :standard network policy enforcement.

Strict : strict network policy enforcement.

NetworkPolicyEnforcingMode is the mode of network policy enforcement.