find better way for password hashing

[beliaev-maksim]

we need to see if we can hash passwords with native python libs

dex-auth-operator/src/charm.py

Lines 22 to 27 in 97a6ddc

	try:
	import bcrypt
	except ImportError:
	subprocess.check_call(["apt", "update"])
	subprocess.check_call(["apt", "install", "-y", "python3-bcrypt"])
	import bcrypt

[alhama7a]

@ca-scribner @beliaev-maksim I think this has already been taken care of by this commit.

[beliaev-maksim]

@alhama7a no
It still uses external package dependency