Update to SIP 4.19 and build for python 2 on Linux

.gitlab-ci.yml

 stages:
   - build
+  - build-noarch
   - deploy
 
 .build-conda: &build-conda
@@ -19,12 +20,15 @@ build-win:
 
 build-noarch:
   <<: *build-conda
+  stage: build-noarch
   script:
     - conda build ./conda/tango --prefix-length=80 --output-folder=dist/ --channel=http://bcu-ci.esrf.fr/stable
+  dependencies:
+    - build-win
   tags:
     - win
 
-deploy_devel:
+deploy-devel:
   stage: deploy
   environment:
     name: devel/$CI_COMMIT_REF_NAME
@@ -44,7 +48,7 @@ deploy_devel:
     - stable
   when: manual
 
-deploy_stable:
+deploy-stable:
   stage: deploy
   environment:
     name: production

conda/camera/conda_build_config.yaml

@@ -5,6 +5,7 @@ c_compiler:
 cxx_compiler:
   - vs2017                     # [win]
 python:
+  - 2.7                        # [linux]
   - 3.6
 # This differs from target_platform in that it determines what subdir the compiler
 #    will target, not what subdir the compiler package will be itself.

conda/camera/meta.yaml

@@ -11,19 +11,19 @@ build:
   number: {{ environ.get('GIT_DESCRIBE_NUMBER', 0) }}
 
 requirements:
-  build:
-    - git
-    - cmake
-    - {{ compiler('cxx') }}
   host:
     - python {{ python }}
     - numpy
-    - sip 4.18*           #For the SIP generator
+    - sip 4.19.8              # For compatibility with pyqt 5.9.2
     - lima-core
     - pco-sdk
+  build:
+    - git
+    - cmake
+    - {{ compiler('cxx') }}
   run:
     - python {{ python }}
-    - sip 4.18*           #For the SIP module
+    - sip >=4.19.4, <=4.19.8  # For compatibility with pyqt 5.9.2
     - {{ pin_compatible('lima-core', max_pin='x.x') }}
     - pco-sdk