main: switch command parsing to use clap

Partially revert 111225a2a5
and add the new dbus and pvpanic arguments.

As we are switching back to clap observe the following changes.

A few examples:

1. `-v -v -v` needs to be written as`-vvv`
2. `--disk D1 --disk D2` and others need to be written as `--disk D1 D2`.
3. `--option value` needs to be written as `--option=value.`

Change integration tests to adapt to the breaking changes.

Signed-off-by: Wei Liu <liuwe@microsoft.com>
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@intel.com>

performance-metrics/src/performance_tests.rs

@@ -358,13 +358,11 @@ pub fn performance_block_io(control: &PerformanceTestControl) -> f64 {
                 guest.disk_config.disk(DiskType::OperatingSystem).unwrap()
             )
             .as_str(),
-            "--disk",
             format!(
                 "path={}",
                 guest.disk_config.disk(DiskType::CloudInit).unwrap()
             )
             .as_str(),
-            "--disk",
             format!("path={BLK_IO_TEST_IMG}").as_str(),
         ])
         .default_net()