Add missing epoch in Provides statement
    
    The rpmdiff tool notified me on changes in Provides statement, although
    it is expected that Provides is updated with each new version. Then
    I realized that the epoch is missing in the following statement:
    
    Provides:       xfreerdp = %{version}-%{release}
    
    Let's add the missing epoch there as it is already in other Provides
    statements in this spec file.