Merge ~hammerstefan/jenkins-launchpad-plugin:fix-trigger-timeout into jenkins-launchpad-plugin:master

[Stefan Hammer]

fix(launchpadTrigger): lock-timeout type error

Tested via a local virtualenv install of the modified jenkins-launchpad-plugin package
```
$ pip install -e .
$ launchpadTrigger --lock-name=maint-ci-cloudware-image_naming-trigger --job=maint-ci-cloudware-image_naming-test '--branch=lp:~cloudware/cloudware/+git/image_naming' --trigger-ci --repo_type=git --lock-timeout=60
DEBUG: Going to acquire launchpad lock "launchpad-trigger-lock-maint-ci-cloudware-image_naming-trigger" for launchpadTrigger
DEBUG: Lock acquired for launchpadTrigger
...
<CTRL-C>
```

[Paride Legovini (paride)]

I'm off until 2023-06-13 inclusive, then I'll have a look at this unless anybody else chimes in before.

[Paride Legovini (paride)]

LGTM, thanks!

review: Approve

diff --git a/jlp/commands/launchpadTrigger.py b/jlp/commands/launchpadTrigger.py
index 0bc4dd3..a2cf238 100644
--- a/jlp/commands/launchpadTrigger.py
+++ b/jlp/commands/launchpadTrigger.py
@@ -79,6 +79,7 @@ def launchpadTrigger():
                         to be used''')
     parser.add_argument('--lock-timeout',
                         default=None,
+                        type=int,
                         help='''timeout in seconds (or None)''')
     parser.add_argument("-r", "--repo_type", default="auto",
                         help="Repository type [bazaar, git, or auto]")
diff --git a/jlp/socketlock.py b/jlp/socketlock.py
index 97741cf..f4639b7 100644
--- a/jlp/socketlock.py
+++ b/jlp/socketlock.py
@@ -34,6 +34,8 @@ class SocketLock(object):
         """
         if not timeout:
             timeout = self.timeout
+        if isinstance(timeout, str):
+            timeout = int(timeout)
 
         end_time = time.time()
         if timeout is not None and timeout > 0: