Update Readme file to install more build depedencies

[manishgkasera]

The preinstall.sh script uses few more dependencies, should be added to ap-get install command.
I was using a different base image and faced issues.
Depdencies:

1. tar
2. gzip
3. autoconf
4. automake
5. libtool

[vincilbishop]

Probably add libkrb5-dev to that as well...that was required for my v2.0.0 install on Ubuntu 20.04

[venusdharan]

for ubuntu i have to install these deps:
build-essential
libexecs-dev
tar
gzip
autoconf
automake
libtool
cmake
libkrb5-dev

[GaneshJayaram97]

Thanks @venusdharan and @manishgkasera for the list. It worked for me.

[twistedpair]

@venusdharan @GaneshJayaram97 what Ubuntu image/version were you using?

[GaneshJayaram97]

20.04.6 LTS