Remove --use-deprecated legacy-resolver flag

The pip team is planning to depreciate the
'--use-deprecated legacy-resolver' install option.

This change removes the option and fixes requirements inconsistencies.

Test Plan:

PASS: Verify that tox runs without issues.
PASS: Build snmp package and install it.
PASS: Upload and apply snmp application and check if pod
      is running.
PASS: Perform snmpget/bulk/walk commands and verify they work.
PASS: Check traps are generated.

Closes-bug: 1966075

Signed-off-by: Agustin Carranza <agustin.carranza@windriver.com>
Change-Id: Ib7fd2cdea5bbd62a7462827971485fd5121ebdce

python3-k8sapp-snmp/k8sapp_snmp/requirements.txt

@@ -1,2 +1,2 @@
-pbr>=2.0.0
-PyYAML==3.10
+pbr>=5.1.3
+PyYAML>=3.13

python3-k8sapp-snmp/k8sapp_snmp/test-requirements.txt

@@ -12,13 +12,13 @@ passlib>=1.7.0
 psycopg2-binary
 python-subunit>=0.0.18
 requests-mock>=0.6.0 # Apache-2.0
-sphinx!=1.2.0,!=1.3b1,<1.3,>=1.1.2
-oslosphinx<2.6.0,>=2.5.0 # Apache-2.0
+sphinx>=1.8.4
+oslosphinx>=4.18.0 # Apache-2.0
 oslotest>=3.2.0 # Apache-2.0
 stestr>=1.0.0 # Apache-2.0
 testrepository>=0.0.18
 testtools!=1.2.0,>=0.9.36
-tempest-lib<0.5.0,>=0.4.0
+tempest-lib
 ipaddr
 pytest
 pyudev

python3-k8sapp-snmp/k8sapp_snmp/tox.ini

@@ -21,8 +21,7 @@ sitepackages = False
 allowlist_externals = bash
                       find
 
-install_command = pip install --use-deprecated legacy-resolver \
-    -v -v -v \
+install_command = pip install  \
     -c{toxinidir}/upper-constraints.txt \
     -c{env:UPPER_CONSTRAINTS_FILE:https://opendev.org/openstack/requirements/raw/branch/stable/stein/upper-constraints.txt} \
     {opts} {packages}
@@ -83,7 +82,6 @@ commands =
 [testenv:py39]
 basepython = python3.9
 install_command = pip install \
-    -v -v -v  --use-deprecated legacy-resolver \
     -c{env:UPPER_CONSTRAINTS_FILE:https://opendev.org/starlingx/root/raw/branch/master/build-tools/requirements/debian/upper-constraints.txt} \
     {opts} {packages}
 commands =