Add vim-specific files to .gitignore

Change-Id: I1abcd8ca0e18178684c916ef6f7d55c25c0814a4
Reviewed-on: http://gerrit.cloudera.org:8080/4562
Reviewed-by: Tim Armstrong <tarmstrong@cloudera.com>
Tested-by: Internal Jenkins

.gitignore

@@ -1,6 +1,5 @@
 *~
 *.pyc
-.*.swp
 derby.log
 thirdparty
 compile_commands.json
@@ -54,4 +53,9 @@ core.*
 hs_err_pid*.log
 
 # Binaries disallowed by ASF rules
-*.jar
+*.jar
+
+# Vim related files
+.*.swp
+.vimrc
+be/.ycm_extra_conf.py