Add additional python deps & fix tf detection

- Add additional python dependencies
- Change tensorflow installed detection to not check for version 2.7 .
  Since tf is installed from file, it doesn't register as version 2.7

roles/ml-python-packages/files/requirements.txt

@@ -3,3 +3,5 @@ matplotlib==3.4.*
 pandas==1.3.*
 Pillow==8.4.*
 scikit-learn==1.0.*
+seaborn==0.11.*
+plotly==5.4.*

roles/ml-python-packages/tasks/main.yml

@@ -23,8 +23,8 @@
 
 
 
-- name: Check if tensorflow is installed
-  shell: ". /home/{{ target_user }}/.ml-venv/bin/activate && pip3 freeze | grep -q tensorflow==2.7"
+- name: Check if tensorflow is installed (from wheel file)
+  shell: ". /home/{{ target_user }}/.ml-venv/bin/activate && pip3 freeze | grep -q 'tensorflow @ file'"
   register: tfinstalled
   changed_when: "tfinstalled.rc != 0"
   failed_when: false