Fix debian/bootstrap.sh from whitespace error

Commit e5d247df (packaging python-esl) added trailing whitespace to the
package definition.  Our trivial parser in the bootstrap script is
sensitive to this, so the change rather broke debian/bootstrap.sh.

This fixes commit e5d247df.

debian/bootstrap.sh

@@ -371,7 +371,7 @@ Description: Cross-Platform Scalable Multi-Protocol Soft Switch
  .
  This package contains the FreeSWITCH core library.
 
-Package: python-esl 
+Package: python-esl
 Section: python
 Architecture: any
 Depends: \${shlibs:Depends}, \${misc:Depends}, \${python:Depends}