get rid of hardcoded remote user

in all playbooks

geant/gap_ansible/playbooks/base_config.yaml

 - name: Manage base config playbook
   hosts: all
   gather_facts: false
-  # remote_user: admin
-  # remote_user: geant-gap-test
   roles:
     - Juniper.junos
     - ../roles/base_config

geant/gap_ansible/playbooks/base_config_checks.yaml

@@ -2,7 +2,5 @@
   hosts: all
   connection: netconf
   gather_facts: false
-  # remote_user: "{{ gap_ansible_user }}"
-  remote_user: geant-ne-na-lab
   roles:
     - ../roles/base_config_checks

geant/gap_ansible/playbooks/check_ibgp.yaml

 - name: Check iBGP status on P
   hosts: all
-  # remote_user: "{{ gap_ansible_user }}"
-  remote_user: geant-ne-na-lab
   gather_facts: false
   roles:
     - Juniper.junos

geant/gap_ansible/playbooks/iptrunks.yaml

 - name: Manage iptrunks playbook
   hosts: all
-  # remote_user: "{{ gap_ansible_user }}"
-  # remote_user: geant-ne-na-lab
   gather_facts: false
   roles:
     - Juniper.junos

geant/gap_ansible/playbooks/iptrunks_checks.yaml

 - name: Manage iptrunks checks playbook
   hosts: all
-  # remote_user: "{{ gap_ansible_user }}"
-  # remote_user: geant-ne-na-lab
   gather_facts: false
   roles:
     - Juniper.junos

geant/gap_ansible/playbooks/iptrunks_migration.yaml

 - name: Manage iptrunks migration
   hosts: all
-  # remote_user: "{{ gap_ansible_user }}"
-  remote_user: geant-ne-na-lab
   gather_facts: false
   roles:
     - Juniper.junos

geant/gap_ansible/playbooks/update_ibgp_mesh.yaml

 - name: Manage iBGP mesh
   hosts: all
-  # remote_user: "{{ gap_ansible_user }}"
-  remote_user: geant-ne-na-lab
   gather_facts: false
   roles:
     - Juniper.junos