Allow repository name change via git scm basename paramter

Example:
https://github.com/DMTF/Redfishtool.git
vs
network:utilities/redfishtool

In mainline project the first letter 'R' is
uppercase, but in OBS it's lowercase.

Adding basename= parameter in _service file with this patch like:
     <param name="revision">main</param>
     <param name="versionformat">@PARENT_TAG@.@[email protected]%h</param>
     <param name="changesgenerate">enable</param>
-    </service>
+    <param name="basename">redfishtool</param>
+  </service>
   <service name="set_version" mode="localonly"/>
   <service name="tar" mode="buildtime">
   </service>

results in:
redfishtool
redfishtool-1.1.7.1.gfaa99dc.obscpio
redfishtool-1.1.7.1.gfaa99dc.tar.xz
redfishtool.obsinfo

instead of (without basename param):
Redfishtool
Redfishtool-1.1.7.1.gfaa99dc.obscpio
Redfishtool-1.1.7.1.gfaa99dc.tar.xz
Redfishtool.obsinfo

With this patch it is possible to adopt or rename
any arbitrary git project name to its matching OBS project
name and process it via OBS services.

Author: watologo1

TarSCM/cli.py

@@ -58,6 +58,7 @@ def __init__(self):
         self.user = None
         self.keyring_passphrase = None
         self.changesgenerate = False
+        self.basename = None
 
     def parse_args(self, options):
         parser = argparse.ArgumentParser(description='Git Tarballs')
@@ -194,6 +195,12 @@ def parse_args(self, options):
                                  '(only used with \'--latest-signed-*\')')
         parser.add_argument('--without-version', default = False,
                             help='Do not add version to output file.')
+        parser.add_argument('--basename', default = None,
+                            help='Checkout/rename and further process '
+                            'repository as <BASENAME> (requires git scm).'
+                            'Make sure there are no leftovers '
+                            '(workrepo, obsinfo or obscpio) files from'
+                            'a previous run')
 
         self.verify_args(parser.parse_args(options))
 

TarSCM/scm/base.py

@@ -39,7 +39,7 @@ def __init__(self, args, task):
         self.repocachedir      = None
         self.clone_dir         = None
         self.lock_file         = None
-        self.basename          = None
+        self.basename          = args.basename
         self.repodir           = None
         self.user              = None
         self.password          = None
@@ -288,8 +288,9 @@ def _calc_dir_to_clone_to(self, prefix):
         # special handling for cloning bare repositories (../repo/.git/)
         url_path = url_path.rstrip('/')
 
-        self.basename = os.path.basename(os.path.normpath(url_path))
-        self.basename = prefix + self.basename
+        if not self.basename:
+            self.basename = os.path.basename(os.path.normpath(url_path))
+            self.basename = prefix + self.basename
 
         osc_version = 0