Try to add encryption for secrets

[oiintam]

Encrypted secrets and key already generated and put into the respective directory.

Manual testing: using same code segment to decrypt and print out the password plainly, example:

(pandeia_16.1) -bash-4.2$ python test2.py
my password -  1234567890+_~lalala

(pandeia_16.1) -bash-4.2$ cd -
/internal/data1/secrets
(pandeia_16.1) -bash-4.2$ cat test
1234567890+_~lalala
(pandeia_16.1) -bash-4.2$ cat encrypted_test
gAAAAABmIULCnl96-v02L9E_3Ra21Xfv9ykrSaKZS0NhAhINYXedgfcoqHK4HxuURUc9XRREfmScfn3cbzrIPn5uYiUTRO_B__MYEx31aMlu85ONcDcHcVk=
-bash-4.2$ cat test2.py
from cryptography.fernet import Fernet

# read encrypted pwd and convert into byte
with open('/internal/data1/secrets/encrypted_test') as f:
    encpwd = f.read().strip()
    encpwdbyt = bytes(encpwd, 'utf-8')
f.close()

# read key and convert into byte
with open('/internal/data1/secrets/ref_key') as f:
    refKey = ''.join(f.readlines())
    refKeybyt = bytes(refKey, 'utf-8')
f.close()

# use the key and encrypt pwd
keytouse = Fernet(refKeybyt)
myPassbyt = (keytouse.decrypt(encpwdbyt))
myPass = myPassbyt.decode("utf-8")
print("my password - ",myPass)

Test run: https://glitch.etc.stsci.edu/jwst/test/reports/user_pandeia_jwst_oit_secret_JETC-513_2024-04-22-12:21:01.html

PR that has the same change: https://github.com/spacetelescope/etc-controller/pull/135

Address JETC-513

[oiintam]

plssph4 is using this branch; login and admin ssph page look good.

[dchitti-stsci]

Looks good to me.