[Solution] Password less ssh connection not working after upgrading Git Bash in windows

After I had updated git bash with version 2.11.1 on windows my .ssh/config files was overwritten (wiped clean) along with the public-private keys entries for ssh passwordless authentication.

Good thing I had a backup of my .ssh/config and id_pub keys with me.

Simply populating the .ssh/config file, resolved the ssh hostname but still it asked my for my password. Then I added the following entries for IdentityFile at the end of .ssh-config file

Host *

    ServerAliveInterval 300

    ServerAliveCountMax 2

    Compression yes

    CompressionLevel 9

    GSSAPIAuthentication no

    ForwardAgent yes  

    IdentityFile ~/.ssh/id_dsa

    IdentityFile ~/.ssh/vm_private_key

where  id_dsa and vm_private_key were the private ssh keys for ssh authentication.
Again simply running ssh-add <Path to key did not work. It kept complaining about :   

parag@paragpc MINGW64 ~
$ ssh-add -l
Could not open a connection to your authentication agent.

So I ran the following command (source) :

parag@paragpc MINGW64 ~
$ eval $(ssh-agent -s); ssh-add /c/Users/parag/.ssh/id_dsa