Add verbosity level to report pytest details to the slack channel.
Verbosity level must be added as an options (--slack_verbose=[1...3])
Levels:
1) only red/green label
2) #1 + number of failed/passsed/skipped/errored tests
3) #2 + default pytests output as attachment
Add verbosity level to report pytest details to the slack channel. Verbosity level must be added as an options (--slack_verbose=[1...3]) Levels: 1) only red/green label 2) #1 + number of failed/passsed/skipped/errored tests 3) #2 + default pytests output as attachment