Allow globs in GetProjectRootFiles

C# csproj files are usually named like dir/dir.csproj.
Using globs allows us to find them.

Author: bstaletic

ycmd/completers/cs/cs_completer.py

@@ -69,7 +69,7 @@ def GetServerName( self ):
 
 
   def GetProjectRootFiles( self ):
-    return [] # TODO: How to implement this? Regex?
+    return [ '*.csproj' ]
 
 
   def GetCommandLine( self ):

ycmd/completers/language_server/language_server_completer.py

@@ -16,6 +16,7 @@
 # along with ycmd.  If not, see <http://www.gnu.org/licenses/>.
 
 from functools import partial
+from pathlib import Path
 import abc
 import collections
 import contextlib
@@ -2362,7 +2363,7 @@ def GetWorkspaceForFilepath( self, filepath, strict = False ):
     if project_root_files:
       for folder in utils.PathsToAllParentFolders( filepath ):
         for root_file in project_root_files:
-          if os.path.isfile( os.path.join( folder, root_file ) ):
+          if list( Path( folder ).glob( root_file ) ):
             return folder
     return None if strict else os.path.dirname( filepath )